darkcloud | 6b8a4c3d4a4a0a3aea50037744c5fec26a38d3fb6a596d006457f1c51bbc75c7

General

Target

AprilNewOrder.js
Size

2KB
MD5

07151504178ba40a7d393a217ca6e169
SHA1

592662fe8699669abbed3e29d4b9f784ae22a0c9
SHA256

6b8a4c3d4a4a0a3aea50037744c5fec26a38d3fb6a596d006457f1c51bbc75c7
SHA512

99ac2e98d003321fd6f20de14fe6c0fc16a5f716d257b6266e1b6b3ffd7ebf5eaac6234509ea694b1ed5094cc720e852fd37806331cac7922f25427c8c16ded1

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
1	5240	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1279544337-3716153908-718418795-1000\Control Panel\International\Geo\Nation	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
4840	dFZjTpRf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4840 set thread context of 3644	4840	dFZjTpRf.exe	95

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
5536	powershell.exe

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

System Information Discovery
T1082

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	dFZjTpRf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5536	powershell.exe
5536	powershell.exe
4840	dFZjTpRf.exe
4840	dFZjTpRf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5536	powershell.exe
Token: SeDebugPrivilege	4840	dFZjTpRf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3644	RegAsm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 5240 wrote to memory of 5536	5240	wscript.exe	91
PID 5240 wrote to memory of 5536	5240	wscript.exe	91
PID 5536 wrote to memory of 4840	5536	powershell.exe	93
PID 5536 wrote to memory of 4840	5536	powershell.exe	93
PID 5536 wrote to memory of 4840	5536	powershell.exe	93
PID 4840 wrote to memory of 1832	4840	dFZjTpRf.exe	94
PID 4840 wrote to memory of 1832	4840	dFZjTpRf.exe	94
PID 4840 wrote to memory of 1832	4840	dFZjTpRf.exe	94
PID 4840 wrote to memory of 3644	4840	dFZjTpRf.exe	95
PID 4840 wrote to memory of 3644	4840	dFZjTpRf.exe	95
PID 4840 wrote to memory of 3644	4840	dFZjTpRf.exe	95
PID 4840 wrote to memory of 3644	4840	dFZjTpRf.exe	95
PID 4840 wrote to memory of 3644	4840	dFZjTpRf.exe	95
PID 4840 wrote to memory of 3644	4840	dFZjTpRf.exe	95
PID 4840 wrote to memory of 3644	4840	dFZjTpRf.exe	95
PID 4840 wrote to memory of 3644	4840	dFZjTpRf.exe	95

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\AprilNewOrder.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5240
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File "C:\Temp\ZDVGXUKW.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5536
- - C:\Users\Admin\AppData\Local\Temp\dFZjTpRf.exe
    "C:\Users\Admin\AppData\Local\Temp\dFZjTpRf.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4840
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:1832
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:3644

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

JavaScript

1

T1059.007

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Temp\ZDVGXUKW.ps1

Filesize
1.1MB

MD5
e4f6fbf6b952148147b14df27b48c124

SHA1
b90df42f2218e59097a1df29cf5b8c88bb2e7922

SHA256
f6d9198bd707c49454b83687af926ccb8d13c7e43514f59eac1507467e8fb140

SHA512
9a51f5cf8244a69e46eb554672a213f43e9c9e694f33fdc132d10a7fdfaae20ec98ea3ad767b4afb3f3b6cd4c86531e47bbe36157562d289aaa0d981e823a796

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jwtirky1.rth.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
459KB

MD5
e054e2e899ffb160e57b68a54349b5ec

SHA1
75281f831839fd1445e75ab442d0baaa1dc6082d

SHA256
24552408d849799b2cac983d499b1f32c88c10f88319339d0eec00fb01bb19b4

SHA512
c3f58a2e29bff9d11875ea7e2c20393ad791e86676040b09162f5170b05fee6d43735264ad835929da5a5de187625803b9a53ba29fc14055d6b5f025126f7cf9

Download Submit
memory/3644-32-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/3644-34-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/4840-30-0x00000000005A0000-0x000000000061A000-memory.dmp

Filesize
488KB

Download
memory/4840-31-0x0000000002A10000-0x0000000002A16000-memory.dmp

Filesize
24KB

Download
memory/5536-2-0x00007FFED8583000-0x00007FFED8585000-memory.dmp

Filesize
8KB

Download
memory/5536-4-0x0000026FF9BF0000-0x0000026FF9C12000-memory.dmp

Filesize
136KB

Download
memory/5536-13-0x00007FFED8580000-0x00007FFED9041000-memory.dmp

Filesize
10.8MB

Download
memory/5536-14-0x00007FFED8580000-0x00007FFED9041000-memory.dmp

Filesize
10.8MB

Download
memory/5536-29-0x00007FFED8580000-0x00007FFED9041000-memory.dmp

Filesize
10.8MB

Download

Analysis

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