darkcloud | f6d9198bd707c49454b83687af926ccb8d13c7e43514f59eac1507467e8fb140

General

Target

kay.ps1
Size

1.1MB
MD5

e4f6fbf6b952148147b14df27b48c124
SHA1

b90df42f2218e59097a1df29cf5b8c88bb2e7922
SHA256

f6d9198bd707c49454b83687af926ccb8d13c7e43514f59eac1507467e8fb140
SHA512

9a51f5cf8244a69e46eb554672a213f43e9c9e694f33fdc132d10a7fdfaae20ec98ea3ad767b4afb3f3b6cd4c86531e47bbe36157562d289aaa0d981e823a796
SSDEEP

24576:5lUCJ05z5vh0MAUVQF7CguO9IQjYS3yviPY:5Pqx5+UQ73Q5n

Score

10^/10

darkcloud discovery execution stealer

Malware Config

Extracted

Family

darkcloud

C2

https://api.telegram.org/bot7684022823:AAFw0jHSu-b4qs6N7yC88nUOR8ovPrCdIrs/sendMessage?chat_id=6542615755

Signatures

DarkCloud
An information stealer written in Visual Basic.
stealer darkcloud
Darkcloud family
darkcloud

Executes dropped EXE 1 IoCs

pid	Process
5680	gxKjmrDO.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5680 set thread context of 4396	5680	gxKjmrDO.exe	92

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2772	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gxKjmrDO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2772	powershell.exe
2772	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2772	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4396	RegAsm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 5680	2772	powershell.exe	88
PID 2772 wrote to memory of 5680	2772	powershell.exe	88
PID 2772 wrote to memory of 5680	2772	powershell.exe	88
PID 5680 wrote to memory of 4396	5680	gxKjmrDO.exe	92
PID 5680 wrote to memory of 4396	5680	gxKjmrDO.exe	92
PID 5680 wrote to memory of 4396	5680	gxKjmrDO.exe	92
PID 5680 wrote to memory of 4396	5680	gxKjmrDO.exe	92
PID 5680 wrote to memory of 4396	5680	gxKjmrDO.exe	92
PID 5680 wrote to memory of 4396	5680	gxKjmrDO.exe	92
PID 5680 wrote to memory of 4396	5680	gxKjmrDO.exe	92
PID 5680 wrote to memory of 4396	5680	gxKjmrDO.exe	92

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\kay.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Local\Temp\gxKjmrDO.exe
  "C:\Users\Admin\AppData\Local\Temp\gxKjmrDO.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5680
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r52qtqpy.xn3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\gxKjmrDO.exe

Filesize
459KB

MD5
e054e2e899ffb160e57b68a54349b5ec

SHA1
75281f831839fd1445e75ab442d0baaa1dc6082d

SHA256
24552408d849799b2cac983d499b1f32c88c10f88319339d0eec00fb01bb19b4

SHA512
c3f58a2e29bff9d11875ea7e2c20393ad791e86676040b09162f5170b05fee6d43735264ad835929da5a5de187625803b9a53ba29fc14055d6b5f025126f7cf9

Download Submit
memory/2772-26-0x00007FFEDE410000-0x00007FFEDEED1000-memory.dmp

Filesize
10.8MB

Download
memory/2772-11-0x00007FFEDE410000-0x00007FFEDEED1000-memory.dmp

Filesize
10.8MB

Download
memory/2772-12-0x00007FFEDE410000-0x00007FFEDEED1000-memory.dmp

Filesize
10.8MB

Download
memory/2772-6-0x0000023FEF110000-0x0000023FEF132000-memory.dmp

Filesize
136KB

Download
memory/2772-0-0x00007FFEDE413000-0x00007FFEDE415000-memory.dmp

Filesize
8KB

Download
memory/4396-31-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/4396-34-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/4396-38-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/5680-27-0x0000000074EAE000-0x0000000074EAF000-memory.dmp

Filesize
4KB

Download
memory/5680-28-0x00000000007D0000-0x000000000084A000-memory.dmp

Filesize
488KB

Download
memory/5680-29-0x0000000002C30000-0x0000000002C36000-memory.dmp

Filesize
24KB

Download
memory/5680-30-0x0000000074EA0000-0x0000000075650000-memory.dmp

Filesize
7.7MB

Download
memory/5680-35-0x0000000074EA0000-0x0000000075650000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing