badrabbit | ecde835ba7193d93f5116151a64ae4a47f21b5e6a5bff2f5ae9967ef907ed6cb

General

Target

ecde835ba7193d93f5116151a64ae4a47f21b5e6a5bff2f5ae9967ef907ed6cb.dll
Size

162KB
MD5

3198aa867e74a913749ffdf4e11aee10
SHA1

d130367213644ea574a7ad7b0d543e1e5fb5c35a
SHA256

ecde835ba7193d93f5116151a64ae4a47f21b5e6a5bff2f5ae9967ef907ed6cb
SHA512

055af6f200ad45e5c11fa84c8d639134076381e414d8ef29ec6ea34b042079a7394c849692687f88d55f43f27d78bfbcbcd885f756b9e8b3966385551506a386

Score

10^/10

badrabbit dridex 40112 botnet evasion loader ransomware trojan

Malware Config

Extracted

Family

dridex

Botnet

40112

C2

107.172.227.10:443

172.93.133.123:2303

108.168.61.147:8172

rc4.plain

Signatures

BadRabbit
Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.
ransomware badrabbit
Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

resource	yara_rule
behavioral1/memory/964-115-0x0000000073AA0000-0x0000000073ACE000-memory.dmp	dridex_ldr

Executes dropped EXE 1 IoCs

pid	Process
3224	C857.tmp

Modifies extensions of user files 3 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\CompareSend.tiff	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\ConfirmUndo.tiff	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\EnterRegister.tiff	rundll32.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\dispci.exe	rundll32.exe
File opened for modification	C:\Windows\C857.tmp	rundll32.exe
File opened for modification	C:\Windows\infpub.dat	rundll32.exe
File created	C:\Windows\cscc.dat	rundll32.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
4056	schtasks.exe
3728	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
936	rundll32.exe
936	rundll32.exe
936	rundll32.exe
936	rundll32.exe
3224	C857.tmp
3224	C857.tmp
3224	C857.tmp
3224	C857.tmp
3224	C857.tmp
3224	C857.tmp
936	rundll32.exe
936	rundll32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	936	rundll32.exe
Token: SeDebugPrivilege	936	rundll32.exe
Token: SeTcbPrivilege	936	rundll32.exe
Token: SeDebugPrivilege	3224	C857.tmp

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 964	2016	rundll32.exe	53
PID 2016 wrote to memory of 964	2016	rundll32.exe	53
PID 2016 wrote to memory of 964	2016	rundll32.exe	53
PID 3932 wrote to memory of 936	3932	rundll32.exe	81
PID 3932 wrote to memory of 936	3932	rundll32.exe	81
PID 3932 wrote to memory of 936	3932	rundll32.exe	81
PID 936 wrote to memory of 2372	936	rundll32.exe	82
PID 936 wrote to memory of 2372	936	rundll32.exe	82
PID 936 wrote to memory of 2372	936	rundll32.exe	82
PID 2372 wrote to memory of 2864	2372	cmd.exe	84
PID 2372 wrote to memory of 2864	2372	cmd.exe	84
PID 2372 wrote to memory of 2864	2372	cmd.exe	84
PID 936 wrote to memory of 2504	936	rundll32.exe	85
PID 936 wrote to memory of 2504	936	rundll32.exe	85
PID 936 wrote to memory of 2504	936	rundll32.exe	85
PID 936 wrote to memory of 2512	936	rundll32.exe	88
PID 936 wrote to memory of 2512	936	rundll32.exe	88
PID 936 wrote to memory of 2512	936	rundll32.exe	88
PID 2504 wrote to memory of 4056	2504	cmd.exe	87
PID 2504 wrote to memory of 4056	2504	cmd.exe	87
PID 2504 wrote to memory of 4056	2504	cmd.exe	87
PID 936 wrote to memory of 3224	936	rundll32.exe	89
PID 936 wrote to memory of 3224	936	rundll32.exe	89
PID 2512 wrote to memory of 3728	2512	cmd.exe	92
PID 2512 wrote to memory of 3728	2512	cmd.exe	92
PID 2512 wrote to memory of 3728	2512	cmd.exe	92

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ecde835ba7193d93f5116151a64ae4a47f21b5e6a5bff2f5ae9967ef907ed6cb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ecde835ba7193d93f5116151a64ae4a47f21b5e6a5bff2f5ae9967ef907ed6cb.dll,#1
  2⤵
  - Checks whether UAC is enabled
  PID:964

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\infpub.dat",#2 15
1⤵
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
  2⤵
  - Modifies extensions of user files
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:936
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Delete /F /TN rhaegal
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2372
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Delete /F /TN rhaegal
      4⤵
      PID:2864
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Create /RU SYSTEM /SC ONSTART /TN rhaegal /TR "C:\Windows\system32\cmd.exe /C Start \"\" \"C:\Windows\dispci.exe\" -id 3639060505 && exit"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2504
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /RU SYSTEM /SC ONSTART /TN rhaegal /TR "C:\Windows\system32\cmd.exe /C Start \"\" \"C:\Windows\dispci.exe\" -id 3639060505 && exit"
      4⤵
      Creates scheduled task(s)
      PID:4056
- - C:\Windows\SysWOW64\cmd.exe
    /c schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 00:41:00
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2512
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 00:41:00
      4⤵
      Creates scheduled task(s)
      PID:3728
- - C:\Windows\C857.tmp
    "C:\Windows\C857.tmp" \\.\pipe\{549FF87C-E091-4ADA-A6BF-6992F19CAAB5}
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3224

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/964-117-0x0000000003360000-0x0000000003366000-memory.dmp

Filesize
24KB

Download
memory/964-115-0x0000000073AA0000-0x0000000073ACE000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads