umbral | 6875f12af60ba6a8cdba7d0de127c23eae6c98f981abc66cf5c8b7fc74b83df9

Analysis

max time kernel
114s
max time network
117s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
22-02-2024 14:22

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General

Target

HAVOC.rar
Size

16.8MB
MD5

83252ecd7c7fb9d73666babf11028e88
SHA1

eee5fb070e365b029d25df28f54573dd47e3f4b5
SHA256

6875f12af60ba6a8cdba7d0de127c23eae6c98f981abc66cf5c8b7fc74b83df9
SHA512

3d1ac511af08749508b8edbe5450cb4928d7bd5a86180b323746c4e902c6d2ab064de6020f1d693c7910edd55723cfe52c43275c9a9dfee868abe83fa81d9dc6
SSDEEP

393216:gT3eEuG8i1NQ8nJ8he2jBIkmM968MLs9BPEJvBwgeI5WbVXAXwY3h:59Fi1NlChbVCs9BPEJpT5OXAgY3h

Score

10^/10

umbral stealer

Malware Config

Extracted

Family

umbral

https://discord.com/api/webhooks/1210097168828862514/qiMfB8pbI0VGmLbCJI5y8HimVnNMcTPgOOb0GXnBUBDvOTpqayQ7-E9CYaH-x55WGvwc

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000100000002a7fa-25.dat	family_umbral
behavioral2/memory/5016-27-0x0000026527F10000-0x0000026527F78000-memory.dmp	family_umbral

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

Executes dropped EXE 1 IoCs

pid	Process
5016	Havoc.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-1-5-21-1637591879-962683004-3585269084-1000_Classes\Local Settings	cmd.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeRestorePrivilege	1856	7zFM.exe
Token: 35	1856	7zFM.exe
Token: SeSecurityPrivilege	1856	7zFM.exe
Token: SeDebugPrivilege	5016	Havoc.exe
Token: SeIncreaseQuotaPrivilege	3460	wmic.exe
Token: SeSecurityPrivilege	3460	wmic.exe
Token: SeTakeOwnershipPrivilege	3460	wmic.exe
Token: SeLoadDriverPrivilege	3460	wmic.exe
Token: SeSystemProfilePrivilege	3460	wmic.exe
Token: SeSystemtimePrivilege	3460	wmic.exe
Token: SeProfSingleProcessPrivilege	3460	wmic.exe
Token: SeIncBasePriorityPrivilege	3460	wmic.exe
Token: SeCreatePagefilePrivilege	3460	wmic.exe
Token: SeBackupPrivilege	3460	wmic.exe
Token: SeRestorePrivilege	3460	wmic.exe
Token: SeShutdownPrivilege	3460	wmic.exe
Token: SeDebugPrivilege	3460	wmic.exe
Token: SeSystemEnvironmentPrivilege	3460	wmic.exe
Token: SeRemoteShutdownPrivilege	3460	wmic.exe
Token: SeUndockPrivilege	3460	wmic.exe
Token: SeManageVolumePrivilege	3460	wmic.exe
Token: 33	3460	wmic.exe
Token: 34	3460	wmic.exe
Token: 35	3460	wmic.exe
Token: 36	3460	wmic.exe
Token: SeIncreaseQuotaPrivilege	3460	wmic.exe
Token: SeSecurityPrivilege	3460	wmic.exe
Token: SeTakeOwnershipPrivilege	3460	wmic.exe
Token: SeLoadDriverPrivilege	3460	wmic.exe
Token: SeSystemProfilePrivilege	3460	wmic.exe
Token: SeSystemtimePrivilege	3460	wmic.exe
Token: SeProfSingleProcessPrivilege	3460	wmic.exe
Token: SeIncBasePriorityPrivilege	3460	wmic.exe
Token: SeCreatePagefilePrivilege	3460	wmic.exe
Token: SeBackupPrivilege	3460	wmic.exe
Token: SeRestorePrivilege	3460	wmic.exe
Token: SeShutdownPrivilege	3460	wmic.exe
Token: SeDebugPrivilege	3460	wmic.exe
Token: SeSystemEnvironmentPrivilege	3460	wmic.exe
Token: SeRemoteShutdownPrivilege	3460	wmic.exe
Token: SeUndockPrivilege	3460	wmic.exe
Token: SeManageVolumePrivilege	3460	wmic.exe
Token: 33	3460	wmic.exe
Token: 34	3460	wmic.exe
Token: 35	3460	wmic.exe
Token: 36	3460	wmic.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1856	7zFM.exe
1856	7zFM.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 1856	1588	cmd.exe	81
PID 1588 wrote to memory of 1856	1588	cmd.exe	81
PID 5016 wrote to memory of 3460	5016	Havoc.exe	90
PID 5016 wrote to memory of 3460	5016	Havoc.exe	90

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\HAVOC.rar
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Program Files\7-Zip\7zFM.exe
  "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\HAVOC.rar"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:1856

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:688

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\HAVOC\Havoc-Executor-V2\Havoc-Executor\Havoc-Executor\Havoc-Executor\Read Before Use.txt
1⤵
PID:1064

C:\Users\Admin\Desktop\HAVOC\Havoc-Executor-V2\Havoc-Executor\Havoc-Executor\Havoc-Executor\Havoc-Executor\Havoc.exe
"C:\Users\Admin\Desktop\HAVOC\Havoc-Executor-V2\Havoc-Executor\Havoc-Executor\Havoc-Executor\Havoc-Executor\Havoc.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5016
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3460

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\Havoc-Executor-V2\Havoc-Executor\Havoc-Executor\Havoc-Executor\Havoc-Executor\Havoc.exe

Filesize
392KB

MD5
36e9a2e99f37e82fe3e2a364d2fba865

SHA1
b09efd3439561f7de7b04d62d6c580c5be3e9b78

SHA256
83f5f98bc4c0ba87b31259771f35c5822bca2185d90aae6fc174ba816625f1e0

SHA512
da94b2c19995991530b8395ec8fa7d12572bcbaaf94ee290c4d74da36ef91503d057368e0c3de8066a68fdce3ba2bef95b1c821754ab55e0226a6b1de73541dd

Download Submit
C:\Users\Admin\Desktop\HAVOC\Havoc-Executor-V2\Havoc-Executor\Havoc-Executor\Havoc-Executor\Read Before Use.txt

Filesize
143B

MD5
debdb28ccd7c400149c7d35c03f31a92

SHA1
cb2cbc7c1e1c7d9884d53c61b4704b14d185a237

SHA256
2b07fc5bdef73b169d8038a11f39912e74e78cfa81b6f69716a0f492b8925ab8

SHA512
b9b553672f6490b0cc1ffe39092d60810d21044686769ddf70ca9bbd6c52e4f4539acf22d9b85218284e0588ed2ac5baac82a5b93cf4f84296c1ff3b1f68591e

Download Submit
memory/5016-27-0x0000026527F10000-0x0000026527F78000-memory.dmp

Filesize
416KB

Download
memory/5016-28-0x00007FF82F390000-0x00007FF82FE52000-memory.dmp

Filesize
10.8MB

Download
memory/5016-29-0x00000265424E0000-0x00000265424F0000-memory.dmp

Filesize
64KB

Download
memory/5016-31-0x00007FF82F390000-0x00007FF82FE52000-memory.dmp

Filesize
10.8MB

Download