29c723ebd9c1af2bb82db17fe0bcb587fb8311f651867e6b217be17d378b51f4

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 08:38

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General

Target

1396e9d56493cd08319ecf9da9ff6a77.exe
Size

14KB
MD5

1396e9d56493cd08319ecf9da9ff6a77
SHA1

45446b199eb9ccec84894466e22a2943f0d6edf6
SHA256

29c723ebd9c1af2bb82db17fe0bcb587fb8311f651867e6b217be17d378b51f4
SHA512

d474de3ed4fa5d9d69cb923553a1a5f4a931f78f8d2723f7c4dc512401979cddaeb3902334db1653bffbe612c4d1595f673c7a37f6c859f5236462142838d290
SSDEEP

384:SvT/v4DyWAF5HqV+l+LOXKuzJ+MUZiCVEk5:Sv7Q+WAL/l+LIKInHg

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\imgutilhx2.dll = "{DA56B183-A731-402b-9235-2CB8803E212D}"	1396e9d56493cd08319ecf9da9ff6a77.exe

Deletes itself 1 IoCs

pid	Process
2660	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2928	1396e9d56493cd08319ecf9da9ff6a77.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\imgutilhx2.tmp	1396e9d56493cd08319ecf9da9ff6a77.exe
File opened for modification	C:\Windows\SysWOW64\imgutilhx2.tmp	1396e9d56493cd08319ecf9da9ff6a77.exe
File opened for modification	C:\Windows\SysWOW64\imgutilhx2.nls	1396e9d56493cd08319ecf9da9ff6a77.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DA56B183-A731-402b-9235-2CB8803E212D}	1396e9d56493cd08319ecf9da9ff6a77.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DA56B183-A731-402b-9235-2CB8803E212D}\InProcServer32	1396e9d56493cd08319ecf9da9ff6a77.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DA56B183-A731-402b-9235-2CB8803E212D}\InProcServer32\ = "C:\\Windows\\SysWow64\\imgutilhx2.dll"	1396e9d56493cd08319ecf9da9ff6a77.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DA56B183-A731-402b-9235-2CB8803E212D}\InProcServer32\ThreadingModel = "Apartment"	1396e9d56493cd08319ecf9da9ff6a77.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2928	1396e9d56493cd08319ecf9da9ff6a77.exe
2928	1396e9d56493cd08319ecf9da9ff6a77.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2928	1396e9d56493cd08319ecf9da9ff6a77.exe
2928	1396e9d56493cd08319ecf9da9ff6a77.exe
2928	1396e9d56493cd08319ecf9da9ff6a77.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2928 wrote to memory of 2660	2928	1396e9d56493cd08319ecf9da9ff6a77.exe	28
PID 2928 wrote to memory of 2660	2928	1396e9d56493cd08319ecf9da9ff6a77.exe	28
PID 2928 wrote to memory of 2660	2928	1396e9d56493cd08319ecf9da9ff6a77.exe	28
PID 2928 wrote to memory of 2660	2928	1396e9d56493cd08319ecf9da9ff6a77.exe	28

C:\Users\Admin\AppData\Local\Temp\1396e9d56493cd08319ecf9da9ff6a77.exe
"C:\Users\Admin\AppData\Local\Temp\1396e9d56493cd08319ecf9da9ff6a77.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2928
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\8871.tmp.bat
  2⤵
  - Deletes itself
  PID:2660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\8871.tmp.bat

Filesize
179B

MD5
be972cf308080454d050799f06c2f763

SHA1
46c0901847e250afb8ffac025894c5c2d7285720

SHA256
40c6ed7cc0c8bd464c1dd1482eb9b582eb80532683a7dd2690f6d2d4c9661b5d

SHA512
c0effb71489d78761a0f90a1518ef9fdcbab0e4ee4f62e1f7d8806e2a9ee33dc72fc78ca1e04585e248b099c447763b77ea029c931a58b0de012226e5aed2213

Download Submit
C:\Windows\SysWOW64\imgutilhx2.dll

Filesize
576KB

MD5
9ca85e7cbdd41028e86618761c4be537

SHA1
efc86712d6362107e7df5fe40cce26c08bd63146

SHA256
e0369a420d80dbd64877d5d9efb6c205b179362d1ab9864981e946668273fc77

SHA512
37b7ceff4be35aeceb82e74cda0e7cbde899404e422b184564f47eb425890d7828c664a45e24b456ee9a2c27f2c1838e686c95969da12a49acb1257f73ba9e77

Download Submit
\Windows\SysWOW64\imgutilhx2.dll

Filesize
512KB

MD5
e3b249570f52eec574a8f00b4c364d61

SHA1
4fbbafcb3ef709c6b139429ac4b8e7a2b750aac4

SHA256
2223b6b71f4dbbec52c76052bc12ff3ccc03656fca7987d522a4e0dd778c6ba2

SHA512
d84a807b4ec96b7034b8d8c626749dde5c0a0f73a02909fbf3a98a9682c4285a92acc451187d5fe29f7e8d4d21765f571b335ba71266739e59f6c7959581abe0

Download Submit
memory/2928-8-0x0000000020000000-0x0000000020008000-memory.dmp

Filesize
32KB

Download
memory/2928-17-0x0000000020000000-0x0000000020008000-memory.dmp

Filesize
32KB

Download