70a574fd3ad736ba86d37736bbf451f3daddda1991ca46bc08e0c8711b232f3d

Analysis

max time kernel
153s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
29-10-2022 20:46

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General

Target

70a574fd3ad736ba86d37736bbf451f3daddda1991ca46bc08e0c8711b232f3d.dll
Size

36KB
MD5

84443a156c54c96eb3d2d2490aa56ed0
SHA1

a3394607ee75999874d7063051358e3e3596e0a0
SHA256

70a574fd3ad736ba86d37736bbf451f3daddda1991ca46bc08e0c8711b232f3d
SHA512

b60bf2cfb6e256c258cc8d763d213c0074b14a054cca2b4cc90e17efe0feba702e3448bc7c173b02506491f501002a2471f18262db70563e17f37f726c673e52
SSDEEP

768:gFq9o5mXhd7fpH+8hi6lrR0kJURJV744laZtHSXpdjbwwcx:gFqW4xPHThiorG0ZjSXpdXwr

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 3 IoCs

flow	pid	Process
28	1264	rundll32.exe
30	1264	rundll32.exe
31	1264	rundll32.exe

Loads dropped DLL 3 IoCs

pid	Process
3640	rundll32.exe
3640	rundll32.exe
1264	rundll32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\ljJYPigH.dll,#1"	rundll32.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ljJYPigH.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\ljJYPigH.dll	rundll32.exe
File created	C:\Windows\SysWOW64\jkKbYpOE.dll	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32\ = "C:\\Windows\\SysWow64\\ljJYPigH.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3640	rundll32.exe
3640	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe
1264	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3640	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3640	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3640	rundll32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3284 wrote to memory of 3640	3284	rundll32.exe	74
PID 3284 wrote to memory of 3640	3284	rundll32.exe	74
PID 3284 wrote to memory of 3640	3284	rundll32.exe	74
PID 3640 wrote to memory of 616	3640	rundll32.exe	5
PID 3640 wrote to memory of 1264	3640	rundll32.exe	91
PID 3640 wrote to memory of 1264	3640	rundll32.exe	91
PID 3640 wrote to memory of 1264	3640	rundll32.exe	91
PID 1264 wrote to memory of 3448	1264	rundll32.exe	92
PID 1264 wrote to memory of 3448	1264	rundll32.exe	92
PID 1264 wrote to memory of 3448	1264	rundll32.exe	92

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\70a574fd3ad736ba86d37736bbf451f3daddda1991ca46bc08e0c8711b232f3d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3284
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\70a574fd3ad736ba86d37736bbf451f3daddda1991ca46bc08e0c8711b232f3d.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3640
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\ljJYPigH.dll,a
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - Adds Run key to start application
    - Drops file in System32 directory
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1264
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe "C:\Windows\system32\jkKbYpOE.dll",s
      4⤵
      PID:3448

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\jkKbYpOE.dll

Filesize
42KB

MD5
2610bdd99f7b4578a483112777f0850a

SHA1
ec4329867029f4d8c6b14102e2553fb62e96ab66

SHA256
75b200a95d15682fa89a10d4402595893d505f5e61a797e3a4743b458bfc3f7b

SHA512
31503027aa72a3e47ed1ebc74b64cdc0edab863054ea69d1291edde2463dda5ff16a8973c89ea735f1ce14fe5ac0d5a56433ea86a752577f006b1697933a6ba7

Download Submit
C:\Windows\SysWOW64\ljJYPigH.dll

Filesize
36KB

MD5
84443a156c54c96eb3d2d2490aa56ed0

SHA1
a3394607ee75999874d7063051358e3e3596e0a0

SHA256
70a574fd3ad736ba86d37736bbf451f3daddda1991ca46bc08e0c8711b232f3d

SHA512
b60bf2cfb6e256c258cc8d763d213c0074b14a054cca2b4cc90e17efe0feba702e3448bc7c173b02506491f501002a2471f18262db70563e17f37f726c673e52

Download Submit
C:\Windows\SysWOW64\ljJYPigH.dll

Filesize
36KB

MD5
84443a156c54c96eb3d2d2490aa56ed0

SHA1
a3394607ee75999874d7063051358e3e3596e0a0

SHA256
70a574fd3ad736ba86d37736bbf451f3daddda1991ca46bc08e0c8711b232f3d

SHA512
b60bf2cfb6e256c258cc8d763d213c0074b14a054cca2b4cc90e17efe0feba702e3448bc7c173b02506491f501002a2471f18262db70563e17f37f726c673e52

Download Submit
C:\Windows\SysWOW64\ljJYPigH.dll

Filesize
36KB

MD5
84443a156c54c96eb3d2d2490aa56ed0

SHA1
a3394607ee75999874d7063051358e3e3596e0a0

SHA256
70a574fd3ad736ba86d37736bbf451f3daddda1991ca46bc08e0c8711b232f3d

SHA512
b60bf2cfb6e256c258cc8d763d213c0074b14a054cca2b4cc90e17efe0feba702e3448bc7c173b02506491f501002a2471f18262db70563e17f37f726c673e52

Download Submit
C:\Windows\SysWOW64\ljJYPigH.dll

Filesize
36KB

MD5
84443a156c54c96eb3d2d2490aa56ed0

SHA1
a3394607ee75999874d7063051358e3e3596e0a0

SHA256
70a574fd3ad736ba86d37736bbf451f3daddda1991ca46bc08e0c8711b232f3d

SHA512
b60bf2cfb6e256c258cc8d763d213c0074b14a054cca2b4cc90e17efe0feba702e3448bc7c173b02506491f501002a2471f18262db70563e17f37f726c673e52

Download Submit
memory/1264-141-0x0000000000000000-mapping.dmp

Download
memory/1264-145-0x0000000000760000-0x0000000000765000-memory.dmp

Filesize
20KB

Download
memory/1264-144-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download
memory/3448-146-0x0000000000000000-mapping.dmp

Download
memory/3640-136-0x0000000000590000-0x0000000000595000-memory.dmp

Filesize
20KB

Download
memory/3640-140-0x00000000007E0000-0x000000000086D000-memory.dmp

Filesize
564KB

Download
memory/3640-139-0x00000000007E0000-0x000000000086D000-memory.dmp

Filesize
564KB

Download
memory/3640-138-0x0000000000770000-0x0000000000775000-memory.dmp

Filesize
20KB

Download
memory/3640-137-0x00000000007E0000-0x00000000007F5000-memory.dmp

Filesize
84KB

Download
memory/3640-132-0x0000000000000000-mapping.dmp

Download
memory/3640-135-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download