hxxps://github[.]com/Blank-c/Umbral-Stealer

Resubmissions

28-04-2024 10:07

240428-l52hssde21 10

28-04-2024 10:07

240428-l5nlyade2t 1

28-04-2024 09:45

240428-lq7fhadb5t 7

Analysis

max time kernel
26s
max time network
28s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 10:07

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General

Target

https://github.com/Blank-c/Umbral-Stealer

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

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1660	msedge.exe
1660	msedge.exe
5596	msedge.exe
5596	msedge.exe
4836	identity_helper.exe
4836	identity_helper.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 8 IoCs

pid	Process
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe
5596	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 5596 wrote to memory of 664	5596	msedge.exe	86
PID 5596 wrote to memory of 664	5596	msedge.exe	86
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 3652	5596	msedge.exe	87
PID 5596 wrote to memory of 1660	5596	msedge.exe	88
PID 5596 wrote to memory of 1660	5596	msedge.exe	88
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89
PID 5596 wrote to memory of 888	5596	msedge.exe	89

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://github.com/Blank-c/Umbral-Stealer
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:5596
- 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,0x100,0x104,0xd8,0x108,0x7ffa1f3b46f8,0x7ffa1f3b4708,0x7ffa1f3b4718
  2⤵
  PID:664
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2132,9569346229458868540,16374441483884149454,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2140 /prefetch:2
  2⤵
  PID:3652
- 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=2132,9569346229458868540,16374441483884149454,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2200 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1660
- 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=2132,9569346229458868540,16374441483884149454,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2828 /prefetch:8
  2⤵
  PID:888
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,9569346229458868540,16374441483884149454,131072 --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=3364 /prefetch:1
  2⤵
  PID:3456
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,9569346229458868540,16374441483884149454,131072 --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=3372 /prefetch:1
  2⤵
  PID:3316
- 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=2132,9569346229458868540,16374441483884149454,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4804 /prefetch:8
  2⤵
  PID:1568
- 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=2132,9569346229458868540,16374441483884149454,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4804 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4836
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,9569346229458868540,16374441483884149454,131072 --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=4244 /prefetch:1
  2⤵
  PID:2304
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,9569346229458868540,16374441483884149454,131072 --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=4988 /prefetch:1
  2⤵
  PID:6096
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,9569346229458868540,16374441483884149454,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5304 /prefetch:1
  2⤵
  PID:5272
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,9569346229458868540,16374441483884149454,131072 --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=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5332 /prefetch:1
  2⤵
  PID:3460
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,9569346229458868540,16374441483884149454,131072 --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=5596 /prefetch:1
  2⤵
  PID:536
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,9569346229458868540,16374441483884149454,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3880 /prefetch:1
  2⤵
  PID:2772

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:2128

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:3356

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
4e96ed67859d0bafd47d805a71041f49

SHA1
7806c54ae29a6c8d01dcbc78e5525ddde321b16b

SHA256
bd13ddab4dc4bbf01ed50341953c9638f6d71faf92bc79fbfe93687432c2292d

SHA512
432201c3119779d91d13da55a26d4ff4ce4a9529e00b44ec1738029f92610d4e6e25c05694adf949c3e9c70fbbbbea723f63c29287906729f5e88a046a2edcb7

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

Filesize
152B

MD5
1cbd0e9a14155b7f5d4f542d09a83153

SHA1
27a442a921921d69743a8e4b76ff0b66016c4b76

SHA256
243d05d6af19bfe3e06b1f7507342ead88f9d87b84e239ad1d144e9e454b548c

SHA512
17e5217d5bf67571afb0e7ef30ac21c11ea6553f89457548d96ee4461011f641a7872a37257239fa5f25702f027afb85d5bd9faf2f2f183992b8879407e56a0d

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

Filesize
6KB

MD5
9102319174c05825176a98bd0e1a540a

SHA1
a75bd5ec5242557a528b6af415dd7790a7bfd4b4

SHA256
10f16efcd8c47eabc17465ea6e3c568d3b5155d6a37a1ea85f44252c544e238d

SHA512
f0be1ac5869616d1619113eee8433bea419cd8138bc53bb30762ff6efa956933dae0c6e6135874f97dae499b0127776a631b678d6a18a36984a477de2587ad40

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

Filesize
6KB

MD5
6cda6f8df952e786be1a86215416f752

SHA1
95fce5bfb3de27c9f5cdbac5b0073ea4f69e5114

SHA256
e4cabe35e0f47fa8dad66c89c3d70f8ea5359b1f071fe27b13b189be0e1d382c

SHA512
339a1264a83bebe0ce9c9d688e593b29250ded17c4a589061e5f8e67eec683cf55689a7b728b898e1000188bdd2de46be4139eb479cd09737606979c8ed206a4

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
8KB

MD5
a00518daa88939f7d3245ac57a1bd2bf

SHA1
8db4a2847d7d8dfe4d8656c249f61c8106087744

SHA256
49209dfc3dca386f8544354dd6620e73bc8710a01f256c954415667884d6c69d

SHA512
78a64090e2941410c0dbfe1169d9767c07c3174f17b8032200918a01475a091863b819aee0b81b037f020544559e1421206dd1ee72a873154796153920f572ab

Download Submit