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
150s
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 12 IoCs

pid	Process
2852	msedge.exe
2852	msedge.exe
1820	msedge.exe
1820	msedge.exe
676	identity_helper.exe
676	identity_helper.exe
1068	msedge.exe
1068	msedge.exe
792	msedge.exe
792	msedge.exe
792	msedge.exe
792	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs

pid	Process
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe

Suspicious use of FindShellTrayWindow 33 IoCs

pid	Process
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe
1820	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 1792	1820	msedge.exe	82
PID 1820 wrote to memory of 1792	1820	msedge.exe	82
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2612	1820	msedge.exe	85
PID 1820 wrote to memory of 2852	1820	msedge.exe	86
PID 1820 wrote to memory of 2852	1820	msedge.exe	86
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87
PID 1820 wrote to memory of 4828	1820	msedge.exe	87

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:1820
- 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,0x100,0x104,0xd8,0x108,0x7ffffdf846f8,0x7ffffdf84708,0x7ffffdf84718
  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=2056,12652455075116939641,12074966586058886605,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2108 /prefetch:2
  2⤵
  PID:2612
- 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=2056,12652455075116939641,12074966586058886605,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2128 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2852
- 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=2056,12652455075116939641,12074966586058886605,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2792 /prefetch:8
  2⤵
  PID:4828
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,12652455075116939641,12074966586058886605,131072 --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=3376 /prefetch:1
  2⤵
  PID:1800
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,12652455075116939641,12074966586058886605,131072 --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=3388 /prefetch:1
  2⤵
  PID:3184
- 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=2056,12652455075116939641,12074966586058886605,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5468 /prefetch:8
  2⤵
  PID:4244
- 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=2056,12652455075116939641,12074966586058886605,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5468 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:676
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,12652455075116939641,12074966586058886605,131072 --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=5556 /prefetch:1
  2⤵
  PID:5104
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,12652455075116939641,12074966586058886605,131072 --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=5572 /prefetch:1
  2⤵
  PID:1428
- 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=2056,12652455075116939641,12074966586058886605,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=3508 /prefetch:8
  2⤵
  PID:4820
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,12652455075116939641,12074966586058886605,131072 --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=4932 /prefetch:1
  2⤵
  PID:4704
- 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=2056,12652455075116939641,12074966586058886605,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6056 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1068
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,12652455075116939641,12074966586058886605,131072 --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=5784 /prefetch:1
  2⤵
  PID:4028
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,12652455075116939641,12074966586058886605,131072 --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=4804 /prefetch:1
  2⤵
  PID:2592
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2056,12652455075116939641,12074966586058886605,131072 --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=5816 /prefetch:2
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:792

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:3992

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1076

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
2daa93382bba07cbc40af372d30ec576

SHA1
c5e709dc3e2e4df2ff841fbde3e30170e7428a94

SHA256
1826d2a57b1938c148bf212a47d947ed1bfb26cfc55868931f843ee438117f30

SHA512
65635cb59c81548a9ef8fdb0942331e7f3cd0c30ce1d4dba48aed72dbb27b06511a55d2aeaadfadbbb4b7cb4b2e2772bbabba9603b3f7d9c8b9e4a7fbf3d6b6b

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

Filesize
152B

MD5
ecdc2754d7d2ae862272153aa9b9ca6e

SHA1
c19bed1c6e1c998b9fa93298639ad7961339147d

SHA256
a13d791473f836edcab0e93451ce7b7182efbbc54261b2b5644d319e047a00a7

SHA512
cd4fb81317d540f8b15f1495a381bb6f0f129b8923a7c06e4b5cf777d2625c30304aee6cc68aa20479e08d84e5030b43fbe93e479602400334dfdd7297f702f2

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
183259d778c8d6bbddd10b9b450eaf10

SHA1
370bf0a49ff98fab4a9ce7253f95ef5e3df64635

SHA256
7778f65a9eb88db5c6d2b87c7c119ce904d525ebf1d845617ea64d4d81a9db30

SHA512
c7c2e0b61e334b9f823b00e1d97abd7226418b1c2a111085ee5ec2a7ebf3e0226befdb1f5345ebf4ee1f367d557cd44ae7aa3e15b9b0904ab0bb1622008ccbbc

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

Filesize
6KB

MD5
528c395ea7e40f0035a680078bc5a3ea

SHA1
eb8c2d4e9676da07a146534fe5671bbf68250cc9

SHA256
c7fb20425b93a2ea9419bf2407229a6acde881753329f83ce6060e7bdba20387

SHA512
bd99d990199b7081a6ddaf85f309158d172496750e94205192ce6d4e133d05317bbf3529d8e74025fc2b840817e6e6d2f525553d355e05bd2fcf2ef2aa817d4c

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

Filesize
16B

MD5
6752a1d65b201c13b62ea44016eb221f

SHA1
58ecf154d01a62233ed7fb494ace3c3d4ffce08b

SHA256
0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

SHA512
9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

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

Filesize
10KB

MD5
234e78198d365bd89e3e5023baff8948

SHA1
7cda30a8e6fc5da8dc1ff358f851f98fe47d313f

SHA256
7a764bdb29ed6258177124d5023136fab631cc28ceec35f3fcd3faeaa1e69e4d

SHA512
e2686185ead26b77f9a6af67f09e92659694273addcf2c6920f4ce7be6636a6a4f15074c052ba0f3484ff8cdb1adae782db37350409bd0d0444938bf1aec1f49

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

Filesize
1.1MB

MD5
692fc9d0f02477574c64c3697edd8949

SHA1
59ee6f9bae10719c4d6a4dd2a4bba367f2b3e75b

SHA256
b9a0e06ec7be9a23273b2cb01ca9107e6b8ba4e38fd6a5b04f6bed6eccc0b3a0

SHA512
a474e5850021b3aca44e1aae640a3644698de4633fcfb3ffc5e7300b2e26f29fdf65b0eb24b29e235b6340175ee5b0cd795ddd63566a55f634ca7d8edba4d381

Download Submit