skuld | d2d887cd72c35f65a3f0a506e1abeaf3af3d106704d87d85a0f8c1aa8f693a79

Analysis

max time kernel
1s
max time network
5s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
07-08-2024 11:05

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General

Target

Nitro Gen V2.exe
Size

9.5MB
MD5

ccc6a0807556e22d9291c466779f44d1
SHA1

2b6bbbdf647e6bfc517fd58dcc2a774c248ef0e6
SHA256

d2d887cd72c35f65a3f0a506e1abeaf3af3d106704d87d85a0f8c1aa8f693a79
SHA512

6ca7ecfb2d8a31d41d09b5f4a7550351de2f9bde1398ad733e86a28527b637698e7f9858c256e6b7c5745ab3342b987969b484ce7b71c5cdefcbd69443136b5f
SSDEEP

98304:MLhl+t9w5GRLGL+LhoE+3K4+lkHE/Bf7F/Bz2LIb:kQt9w5MhoE+64+lkk/BjkIb

Score

10^/10

skuld persistence stealer

Malware Config

Extracted

Family

skuld

https://discord.com/api/webhooks/1270694106221252608/DhcaVtra6YX01ZXjUB1RkOdEw0VBFLhDmXKND_Sz6kXglun1ah1Kgr5PCtFoeWId1QLc

Signatures

Skuld stealer
An info stealer written in Go lang.
stealer skuld

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	Nitro Gen V2.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	api.ipify.org
2	api.ipify.org

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	3168	Nitro Gen V2.exe
Token: SeIncreaseQuotaPrivilege	3828	wmic.exe
Token: SeSecurityPrivilege	3828	wmic.exe
Token: SeTakeOwnershipPrivilege	3828	wmic.exe
Token: SeLoadDriverPrivilege	3828	wmic.exe
Token: SeSystemProfilePrivilege	3828	wmic.exe
Token: SeSystemtimePrivilege	3828	wmic.exe
Token: SeProfSingleProcessPrivilege	3828	wmic.exe
Token: SeIncBasePriorityPrivilege	3828	wmic.exe
Token: SeCreatePagefilePrivilege	3828	wmic.exe
Token: SeBackupPrivilege	3828	wmic.exe
Token: SeRestorePrivilege	3828	wmic.exe
Token: SeShutdownPrivilege	3828	wmic.exe
Token: SeDebugPrivilege	3828	wmic.exe
Token: SeSystemEnvironmentPrivilege	3828	wmic.exe
Token: SeRemoteShutdownPrivilege	3828	wmic.exe
Token: SeUndockPrivilege	3828	wmic.exe
Token: SeManageVolumePrivilege	3828	wmic.exe
Token: 33	3828	wmic.exe
Token: 34	3828	wmic.exe
Token: 35	3828	wmic.exe
Token: 36	3828	wmic.exe
Token: SeIncreaseQuotaPrivilege	3828	wmic.exe
Token: SeSecurityPrivilege	3828	wmic.exe
Token: SeTakeOwnershipPrivilege	3828	wmic.exe
Token: SeLoadDriverPrivilege	3828	wmic.exe
Token: SeSystemProfilePrivilege	3828	wmic.exe
Token: SeSystemtimePrivilege	3828	wmic.exe
Token: SeProfSingleProcessPrivilege	3828	wmic.exe
Token: SeIncBasePriorityPrivilege	3828	wmic.exe
Token: SeCreatePagefilePrivilege	3828	wmic.exe
Token: SeBackupPrivilege	3828	wmic.exe
Token: SeRestorePrivilege	3828	wmic.exe
Token: SeShutdownPrivilege	3828	wmic.exe
Token: SeDebugPrivilege	3828	wmic.exe
Token: SeSystemEnvironmentPrivilege	3828	wmic.exe
Token: SeRemoteShutdownPrivilege	3828	wmic.exe
Token: SeUndockPrivilege	3828	wmic.exe
Token: SeManageVolumePrivilege	3828	wmic.exe
Token: 33	3828	wmic.exe
Token: 34	3828	wmic.exe
Token: 35	3828	wmic.exe
Token: 36	3828	wmic.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3168 wrote to memory of 196	3168	Nitro Gen V2.exe	74
PID 3168 wrote to memory of 196	3168	Nitro Gen V2.exe	74
PID 3168 wrote to memory of 4036	3168	Nitro Gen V2.exe	75
PID 3168 wrote to memory of 4036	3168	Nitro Gen V2.exe	75
PID 3168 wrote to memory of 3828	3168	Nitro Gen V2.exe	76
PID 3168 wrote to memory of 3828	3168	Nitro Gen V2.exe	76

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
196	attrib.exe
4036	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Nitro Gen V2.exe
"C:\Users\Admin\AppData\Local\Temp\Nitro Gen V2.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Windows\system32\attrib.exe
  attrib +h +s "C:\Users\Admin\AppData\Local\Temp\Nitro Gen V2.exe"
  2⤵
  - Views/modifies file attributes
  PID:196
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
  2⤵
  - Views/modifies file attributes
  PID:4036
- C:\Windows\System32\Wbem\wmic.exe
  wmic csproduct get UUID
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe

Filesize
9.5MB

MD5
ccc6a0807556e22d9291c466779f44d1

SHA1
2b6bbbdf647e6bfc517fd58dcc2a774c248ef0e6

SHA256
d2d887cd72c35f65a3f0a506e1abeaf3af3d106704d87d85a0f8c1aa8f693a79

SHA512
6ca7ecfb2d8a31d41d09b5f4a7550351de2f9bde1398ad733e86a28527b637698e7f9858c256e6b7c5745ab3342b987969b484ce7b71c5cdefcbd69443136b5f

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads