darkcloud | aa653ad0d107b2d7ab98d4ede0eef147b73fbd7eb2f522f0bf608f833daebe34

Analysis

max time kernel
141s
max time network
118s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
11/03/2025, 14:32

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General

Target
RFQ.exe
Size 881KB
Sample250311-rwbtnsvpt9
SHA256 aa653ad0d107b2d7ab98d4ede0eef147b73fbd7eb2f522f0bf608f833daebe34
MD5 768bed9843a8a7c96699b27fc40b8819
SHA1 4ae495c3540252bef39276bf6e9fc84435f7b7bb
SHA512 e23d433ac20532c512d2f2db1badbf4a2e43d2c28ff73553e2de79d82a012dbe1afe81d59bc830f4606ff3b54b08cbbcbd2b6448cdb12a3246ffb4607ac93539
SSDEEP 12288:TfNeE6xIVKGJA1R1MbXgf+GH4oGSlhA8b06JJe4Ii3QOeGiTJyxwC1ht2ddT+:wE6xcA1LMbDqXm8b0iJ7r6cxvE
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcloud discovery execution stealer

Malware Config

Extracted

Family

darkcloud

https://api.telegram.org/bot7725030292:AAFHYtQUWDdOhIko2DIqyexjh4XvUaOA1Fs/sendMessage?chat_id=6732456666

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2400	powershell.exe
2956	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1968 set thread context of 2688	1968	RFQ.exe	37

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 5 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RFQ.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RFQ.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2864	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2400	powershell.exe
2956	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2688	RFQ.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2400	powershell.exe
Token: SeDebugPrivilege	2956	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2688	RFQ.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2400	1968	RFQ.exe	31
PID 1968 wrote to memory of 2400	1968	RFQ.exe	31
PID 1968 wrote to memory of 2400	1968	RFQ.exe	31
PID 1968 wrote to memory of 2400	1968	RFQ.exe	31
PID 1968 wrote to memory of 2956	1968	RFQ.exe	33
PID 1968 wrote to memory of 2956	1968	RFQ.exe	33
PID 1968 wrote to memory of 2956	1968	RFQ.exe	33
PID 1968 wrote to memory of 2956	1968	RFQ.exe	33
PID 1968 wrote to memory of 2864	1968	RFQ.exe	34
PID 1968 wrote to memory of 2864	1968	RFQ.exe	34
PID 1968 wrote to memory of 2864	1968	RFQ.exe	34
PID 1968 wrote to memory of 2864	1968	RFQ.exe	34
PID 1968 wrote to memory of 2688	1968	RFQ.exe	37
PID 1968 wrote to memory of 2688	1968	RFQ.exe	37
PID 1968 wrote to memory of 2688	1968	RFQ.exe	37
PID 1968 wrote to memory of 2688	1968	RFQ.exe	37
PID 1968 wrote to memory of 2688	1968	RFQ.exe	37
PID 1968 wrote to memory of 2688	1968	RFQ.exe	37
PID 1968 wrote to memory of 2688	1968	RFQ.exe	37
PID 1968 wrote to memory of 2688	1968	RFQ.exe	37
PID 1968 wrote to memory of 2688	1968	RFQ.exe	37

C:\Users\Admin\AppData\Local\Temp\RFQ.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2400
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wOPQRmK.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2956
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wOPQRmK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE7EF.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2864
- C:\Users\Admin\AppData\Local\Temp\RFQ.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpE7EF.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpE7EF.tmp
Size 1KB
SHA256 c73cda18ba010a8fdd15aa474df7357da1e090d6a5754395f2c2418758908f71
MD5 13e931aa5188fc23a96d511833a7656c
SHA1 84fbdb00c37d3f917a00d60bdcbc6e8ae73f09bc
SHA512 02600d13781800f3ee9a62584e5e3556ae58850171213949360da5d9b4d877e8ed31a90c0ac7a303cf563671f1ca6a15ecb265198bddc3447824536a331d3d6b
MD5 SHA1 SHA512

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d93f411851d7c929.customDestinations-ms

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Size 7KB
SHA256 a0f3528126728d860d9b8b8fd821b8c80d5952996563815bda3241779eabd2be
MD5 abc7935dccdabcab0405f32b012cff9c
SHA1 da4f8b8ee20de99e79485dae040df3b96dd3045b
SHA512 8e8e77a1598710cb38fe6c12e1c8f99c84a880d087ddb262e87226aba4a6821907605a93092a90c3cd10f9294829f903e96b33a5e584857c695976a6553da4f7
SSDEEP 96:ItaCFM8nnqvsqvJCwoQtaCFM8nnqvsEHyqvJCworQL5SQH137QHXlUVP:cf7Uokf7AHnorQ8k37QHI
MD5 SHA1 SHA512 SSDEEP

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memory/1968-4-0x000000007463E000-0x000000007463F000-memory.dmp

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memory/1968-32-0x0000000074630000-0x0000000074D1E000-memory.dmp

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memory/1968-0-0x000000007463E000-0x000000007463F000-memory.dmp

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memory/1968-5-0x0000000074630000-0x0000000074D1E000-memory.dmp

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memory/1968-6-0x0000000005010000-0x00000000050CC000-memory.dmp

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memory/1968-2-0x0000000074630000-0x0000000074D1E000-memory.dmp

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memory/1968-1-0x00000000002F0000-0x00000000003D2000-memory.dmp

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memory/1968-3-0x0000000000440000-0x0000000000450000-memory.dmp

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memory/2688-29-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/2688-28-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/2688-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2688-23-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/2688-21-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/2688-19-0x0000000000400000-0x0000000000472000-memory.dmp

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