umbral | b02f3ef73077f0c54cff0e1d920e2013ea549c97daede6cae61c966d556fff9e

Analysis

max time kernel
53s
max time network
55s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
21/02/2024, 23:17

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General

Target

Havoc-ExecutorV2_.rar
Size

16.8MB
MD5

9ff3dea2bad4a76bc65e98acf1234f0a
SHA1

49754b9f66989694c66a5a50f33426ffdb2cc3f5
SHA256

b02f3ef73077f0c54cff0e1d920e2013ea549c97daede6cae61c966d556fff9e
SHA512

94716419b6a60f2b0b2d454215d1f6bb827f88d8d412115837ed35b9135ff73abd1c3995710c4f52d2bb92db07b94803fee5857041a534d077e0c73bcf49415e
SSDEEP

393216:5C/zS+kIvNug+zU+29zreM2M4ZFKV0o24pGO23dVC8:Y/3kIluV7QvF8ZW0o2FtL

Score

10^/10

umbral stealer

Malware Config

Extracted

Family

umbral

https://discord.com/api/webhooks/1202713966892154880/hKt1959RM0bV5-3CpJAwh821Kr6T7h9g1Q2lLB0g86ovim2izdHbNw9y6LtQFK8C5Zhm

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000100000002a7f0-24.dat	family_umbral
behavioral1/memory/4328-26-0x0000027EE2D50000-0x0000027EE2DB8000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Executes dropped EXE 1 IoCs

pid	Process
4328	HavocV2.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4181651180-3163410697-3990547336-1000_Classes\Local Settings	cmd.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeRestorePrivilege	4236	7zFM.exe
Token: 35	4236	7zFM.exe
Token: SeSecurityPrivilege	4236	7zFM.exe
Token: SeDebugPrivilege	4328	HavocV2.exe
Token: SeIncreaseQuotaPrivilege	2524	wmic.exe
Token: SeSecurityPrivilege	2524	wmic.exe
Token: SeTakeOwnershipPrivilege	2524	wmic.exe
Token: SeLoadDriverPrivilege	2524	wmic.exe
Token: SeSystemProfilePrivilege	2524	wmic.exe
Token: SeSystemtimePrivilege	2524	wmic.exe
Token: SeProfSingleProcessPrivilege	2524	wmic.exe
Token: SeIncBasePriorityPrivilege	2524	wmic.exe
Token: SeCreatePagefilePrivilege	2524	wmic.exe
Token: SeBackupPrivilege	2524	wmic.exe
Token: SeRestorePrivilege	2524	wmic.exe
Token: SeShutdownPrivilege	2524	wmic.exe
Token: SeDebugPrivilege	2524	wmic.exe
Token: SeSystemEnvironmentPrivilege	2524	wmic.exe
Token: SeRemoteShutdownPrivilege	2524	wmic.exe
Token: SeUndockPrivilege	2524	wmic.exe
Token: SeManageVolumePrivilege	2524	wmic.exe
Token: 33	2524	wmic.exe
Token: 34	2524	wmic.exe
Token: 35	2524	wmic.exe
Token: 36	2524	wmic.exe
Token: SeIncreaseQuotaPrivilege	2524	wmic.exe
Token: SeSecurityPrivilege	2524	wmic.exe
Token: SeTakeOwnershipPrivilege	2524	wmic.exe
Token: SeLoadDriverPrivilege	2524	wmic.exe
Token: SeSystemProfilePrivilege	2524	wmic.exe
Token: SeSystemtimePrivilege	2524	wmic.exe
Token: SeProfSingleProcessPrivilege	2524	wmic.exe
Token: SeIncBasePriorityPrivilege	2524	wmic.exe
Token: SeCreatePagefilePrivilege	2524	wmic.exe
Token: SeBackupPrivilege	2524	wmic.exe
Token: SeRestorePrivilege	2524	wmic.exe
Token: SeShutdownPrivilege	2524	wmic.exe
Token: SeDebugPrivilege	2524	wmic.exe
Token: SeSystemEnvironmentPrivilege	2524	wmic.exe
Token: SeRemoteShutdownPrivilege	2524	wmic.exe
Token: SeUndockPrivilege	2524	wmic.exe
Token: SeManageVolumePrivilege	2524	wmic.exe
Token: 33	2524	wmic.exe
Token: 34	2524	wmic.exe
Token: 35	2524	wmic.exe
Token: 36	2524	wmic.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4236	7zFM.exe
4236	7zFM.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 4236	4964	cmd.exe	80
PID 4964 wrote to memory of 4236	4964	cmd.exe	80
PID 4328 wrote to memory of 2524	4328	HavocV2.exe	88
PID 4328 wrote to memory of 2524	4328	HavocV2.exe	88

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Havoc-ExecutorV2_.rar
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4964
- C:\Program Files\7-Zip\7zFM.exe
  "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Havoc-ExecutorV2_.rar"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:4236

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1948

C:\Users\Admin\Desktop\Havoc-Executor (1)\Havoc-Executor-V2\Havoc-Executor\Havoc-Executor\Havoc-Executor\Havoc-Executor\HavocV2.exe
"C:\Users\Admin\Desktop\Havoc-Executor (1)\Havoc-Executor-V2\Havoc-Executor\Havoc-Executor\Havoc-Executor\Havoc-Executor\HavocV2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4328
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Desktop\Havoc-Executor (1)\Havoc-Executor-V2\Havoc-Executor\Havoc-Executor\Havoc-Executor\Havoc-Executor\HavocV2.exe

Filesize
394KB

MD5
6867bdcccea54ee53c6a50c31b512bd1

SHA1
5d0e8e73b38eb1d5cfcb158dac68a121466d6719

SHA256
33da805f17a081bcddedae6be9cc2427d0a9b786cd62c1e44440893c02e04bb8

SHA512
6740a2333e8aadbc02f4d63e466ef6f02f4b914bbe3abea9aeeb31d5c10774cc7a2a86e2d4ecc714cf899dd10656114da569a537c5a49ba7f591766f7a60e90c

Download Submit
memory/4328-26-0x0000027EE2D50000-0x0000027EE2DB8000-memory.dmp

Filesize
416KB

Download
memory/4328-27-0x00007FFA2BDE0000-0x00007FFA2C8A2000-memory.dmp

Filesize
10.8MB

Download
memory/4328-28-0x0000027EFD440000-0x0000027EFD450000-memory.dmp

Filesize
64KB

Download
memory/4328-30-0x00007FFA2BDE0000-0x00007FFA2C8A2000-memory.dmp

Filesize
10.8MB

Download