Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system - submitted
07/11/2024, 07:33
Behavioral task
behavioral1
Sample
cmd.exe
Resource
win7-20241010-en
windows7-x64
0 signatures
150 seconds
Behavioral task
behavioral2
Sample
cmd.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target cmd.exe
- Size 9.9MB
- Sample241107-jdtyjaydnn
- SHA256 f596fc4e9e9568c7fe0cac3b46d5e23932062cadc20f1c055f2ac2ab884bd00a
- MD5 240ff0a244a7a888a0df074b70473063
- SHA1 85be735983e86eb656a920dde212fc5d467d642c
- SHA512 83ea2029ea67799889cb3b088bb717fc41a1db85819ca42078de57aa0fb6cc66b578e6642a84d9ac0fb26cd3897ed1cd046e7818d0e79394ee6f149fbb1c2c4d
- SSDEEP 98304:pzU4brhxBASgf/gEpiji6Ig8TWApEIICafZm/mbnXg:pxrhxBAGZji6IdThqRTXg
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
skuld
C2
-
https://discord.com/api/webhooks/1303801444024979538/ccYtBFXL53k2JjPdccF4_Q0RyJhiTuYgSfRuahpcQBQF-lyG_YEYV7JcEsJ-czgGGLml
Signatures
- Skuld family
- Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe" cmd.exe - Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 4 api.ipify.org 5 ip-api.com 3 api.ipify.org - GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.
description flow ioc HTTP User-Agent header 6 Go-http-client/1.1 -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C cmd.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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 cmd.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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 cmd.exe - Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 4740 cmd.exe Token: SeIncreaseQuotaPrivilege 4472 wmic.exe Token: SeSecurityPrivilege 4472 wmic.exe Token: SeTakeOwnershipPrivilege 4472 wmic.exe Token: SeLoadDriverPrivilege 4472 wmic.exe Token: SeSystemProfilePrivilege 4472 wmic.exe Token: SeSystemtimePrivilege 4472 wmic.exe Token: SeProfSingleProcessPrivilege 4472 wmic.exe Token: SeIncBasePriorityPrivilege 4472 wmic.exe Token: SeCreatePagefilePrivilege 4472 wmic.exe Token: SeBackupPrivilege 4472 wmic.exe Token: SeRestorePrivilege 4472 wmic.exe Token: SeShutdownPrivilege 4472 wmic.exe Token: SeDebugPrivilege 4472 wmic.exe Token: SeSystemEnvironmentPrivilege 4472 wmic.exe Token: SeRemoteShutdownPrivilege 4472 wmic.exe Token: SeUndockPrivilege 4472 wmic.exe Token: SeManageVolumePrivilege 4472 wmic.exe Token: 33 4472 wmic.exe Token: 34 4472 wmic.exe Token: 35 4472 wmic.exe Token: 36 4472 wmic.exe Token: SeIncreaseQuotaPrivilege 4472 wmic.exe Token: SeSecurityPrivilege 4472 wmic.exe Token: SeTakeOwnershipPrivilege 4472 wmic.exe Token: SeLoadDriverPrivilege 4472 wmic.exe Token: SeSystemProfilePrivilege 4472 wmic.exe Token: SeSystemtimePrivilege 4472 wmic.exe Token: SeProfSingleProcessPrivilege 4472 wmic.exe Token: SeIncBasePriorityPrivilege 4472 wmic.exe Token: SeCreatePagefilePrivilege 4472 wmic.exe Token: SeBackupPrivilege 4472 wmic.exe Token: SeRestorePrivilege 4472 wmic.exe Token: SeShutdownPrivilege 4472 wmic.exe Token: SeDebugPrivilege 4472 wmic.exe Token: SeSystemEnvironmentPrivilege 4472 wmic.exe Token: SeRemoteShutdownPrivilege 4472 wmic.exe Token: SeUndockPrivilege 4472 wmic.exe Token: SeManageVolumePrivilege 4472 wmic.exe Token: 33 4472 wmic.exe Token: 34 4472 wmic.exe Token: 35 4472 wmic.exe Token: 36 4472 wmic.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4740 wrote to memory of 536 4740 cmd.exe 84 PID 4740 wrote to memory of 536 4740 cmd.exe 84 PID 4740 wrote to memory of 1712 4740 cmd.exe 85 PID 4740 wrote to memory of 1712 4740 cmd.exe 85 PID 4740 wrote to memory of 4472 4740 cmd.exe 87 PID 4740 wrote to memory of 4472 4740 cmd.exe 87 - Views/modifies file attributes 1 TTPs 2 IoCs
pid Process 536 attrib.exe 1712 attrib.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\cmd.exe"C:\Users\Admin\AppData\Local\Temp\cmd.exe"1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4740 -
C:\Windows\system32\attrib.exeattrib +h +s C:\Users\Admin\AppData\Local\Temp\cmd.exe2⤵
- Views/modifies file attributes
PID:536
-
-
C:\Windows\system32\attrib.exeattrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe2⤵
- Views/modifies file attributes
PID:1712
-
-
C:\Windows\System32\Wbem\wmic.exewmic csproduct get UUID2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4472
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
- Size 9.9MB
- SHA256 f596fc4e9e9568c7fe0cac3b46d5e23932062cadc20f1c055f2ac2ab884bd00a
- MD5 240ff0a244a7a888a0df074b70473063
- SHA1 85be735983e86eb656a920dde212fc5d467d642c
- SHA512 83ea2029ea67799889cb3b088bb717fc41a1db85819ca42078de57aa0fb6cc66b578e6642a84d9ac0fb26cd3897ed1cd046e7818d0e79394ee6f149fbb1c2c4d
- SSDEEP 98304:pzU4brhxBASgf/gEpiji6Ig8TWApEIICafZm/mbnXg:pxrhxBAGZji6IdThqRTXg
- MD5 SHA1 SHA512 SSDEEP