hxxps://github[.]com/can-kat/cstealer/archive/refs/heads/main[.]zip

Resubmissions

07/06/2024, 15:29

240607-sw9w5sbd84 1

07/06/2024, 15:29

240607-swzq6sad8w 1

Analysis

max time kernel
145s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
07/06/2024, 15:29

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General

Target

https://github.com/can-kat/cstealer/archive/refs/heads/main.zip

Score

1^/10

Malware Config

Signatures

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	msedge.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
116	msedge.exe
116	msedge.exe
3956	msedge.exe
3956	msedge.exe
2824	identity_helper.exe
2824	identity_helper.exe
2968	msedge.exe
2968	msedge.exe
2968	msedge.exe
2968	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs

pid	Process
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe

Suspicious use of FindShellTrayWindow 33 IoCs

pid	Process
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe
3956	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3956 wrote to memory of 1792	3956	msedge.exe	82
PID 3956 wrote to memory of 1792	3956	msedge.exe	82
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 4212	3956	msedge.exe	83
PID 3956 wrote to memory of 116	3956	msedge.exe	84
PID 3956 wrote to memory of 116	3956	msedge.exe	84
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85
PID 3956 wrote to memory of 2500	3956	msedge.exe	85

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://github.com/can-kat/cstealer/archive/refs/heads/main.zip
1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffe1ce946f8,0x7ffe1ce94708,0x7ffe1ce94718
  2⤵
  PID:1792
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2120 /prefetch:2
  2⤵
  PID:4212
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2208 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:116
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2872 /prefetch:8
  2⤵
  PID:2500
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3280 /prefetch:1
  2⤵
  PID:1820
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3292 /prefetch:1
  2⤵
  PID:2768
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5456 /prefetch:8
  2⤵
  PID:3880
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5456 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2824
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5056 /prefetch:1
  2⤵
  PID:1132
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5520 /prefetch:1
  2⤵
  PID:5072
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=4684 /prefetch:8
  2⤵
  PID:4140
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5688 /prefetch:1
  2⤵
  PID:1220
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5984 /prefetch:8
  2⤵
  PID:3900
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5984 /prefetch:1
  2⤵
  PID:4644
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5676 /prefetch:1
  2⤵
  PID:588
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2108,6363932629789152323,7910556964196806131,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1932 /prefetch:2
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2968

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:5080

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
c9c4c494f8fba32d95ba2125f00586a3

SHA1
8a600205528aef7953144f1cf6f7a5115e3611de

SHA256
a0ca609205813c307df9122c0c5b0967c5472755700f615b0033129cf7d6b35b

SHA512
9d30cea6cfc259e97b0305f8b5cd19774044fb78feedfcef2014b2947f2e6a101273bc4ad30db9cc1724e62eb441266d7df376e28ac58693f128b9cce2c7d20d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
4dc6fc5e708279a3310fe55d9c44743d

SHA1
a42e8bdf9d1c25ef3e223d59f6b1d16b095f46d2

SHA256
a1c5f48659d4b3af960971b3a0f433a95fee5bfafe5680a34110c68b342377d8

SHA512
5874b2310187f242b852fa6dcded244cc860abb2be4f6f5a6a1db8322e12e1fef8f825edc0aae75adbb7284a2cd64730650d0643b1e2bb7ead9350e50e1d8c13

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

Filesize
255B

MD5
d11edf9e08a127c768843acea41d0bc5

SHA1
ff1af9b39de4a3f547407fd9864ffdd2bb6c7354

SHA256
217e4d9d1412e45abf7a653f72a5ab8b53bc8fc6f377f52a042668a41abc7478

SHA512
92c3f0def567b0e2f2523ed25eb9d4abff06070b8be744fea4a6678f25f292439d7bc0c8015eaa6281b7f43149eebb3d3821cd6d6436598481113694b11ddea3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
5KB

MD5
2bb3ee8aee46542f47e51db25dac5c77

SHA1
7ad0259128f994b9e0466ecfbf031d2d9de62dbb

SHA256
caa228045522b37fb79d00b2eb1f6827543c6edd4a8723b26b38e8803cc9d74e

SHA512
b8ebefd1fcb80ed99567be1f8ef1a4b567e18d6ba248cc44f8175c3f5bf9b4df8c5e126916cf9c203ca476b4f318341b99520a122bba456e082c4daa4ecd4074

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
6KB

MD5
7280fc2592e676afa344fd2cb1a82f52

SHA1
ed0d73ecfcd5bf3ece29bda5f30428fb4e89a4d7

SHA256
f05d401cada3eda203a4c72f3f2aa3ff0dd94dbc9a6704ce3aecca2b19ae037c

SHA512
9e49890db425b752ca40a2bcd71cd52893c7d7bea655267adb332ac794b6254dc3c07281fda9f7e7667b1c7d4cb62ecb8da5a043c84e8677a925bd69ad524bf9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

Filesize
16B

MD5
46295cac801e5d4857d09837238a6394

SHA1
44e0fa1b517dbf802b18faf0785eeea6ac51594b

SHA256
0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

SHA512
8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

Filesize
16B

MD5
206702161f94c5cd39fadd03f4014d98

SHA1
bd8bfc144fb5326d21bd1531523d9fb50e1b600a

SHA256
1005a525006f148c86efcbfb36c6eac091b311532448010f70f7de9a68007167

SHA512
0af09f26941b11991c750d1a2b525c39a8970900e98cba96fd1b55dbf93fee79e18b8aab258f48b4f7bda40d059629bc7770d84371235cdb1352a4f17f80e145

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

Filesize
10KB

MD5
9904d8cee18ef661776ff2f7f79026af

SHA1
62e9a401cb14abb844764ff37539cc4a2615918c

SHA256
af71155cc1ea3518a9786251b7777f8e2f7898d19ab5d25a8b7f03500fd2d0ed

SHA512
f44cf715c792c589efe932ac09d76de117b71fa96b9abb285931a197929a165a2520da015e198ece8a0b8e23bb1a97a0940cbececda84c56bb291bc559da73c4

Download Submit
C:\Users\Admin\Downloads\cstealer-main.zip

Filesize
1.1MB

MD5
692fc9d0f02477574c64c3697edd8949

SHA1
59ee6f9bae10719c4d6a4dd2a4bba367f2b3e75b

SHA256
b9a0e06ec7be9a23273b2cb01ca9107e6b8ba4e38fd6a5b04f6bed6eccc0b3a0

SHA512
a474e5850021b3aca44e1aae640a3644698de4633fcfb3ffc5e7300b2e26f29fdf65b0eb24b29e235b6340175ee5b0cd795ddd63566a55f634ca7d8edba4d381

Download Submit