3e1137480ffbee3e517f5c53cb9aef6e9d593ac4c45c289e46f66039cfd8ec87

Analysis

max time kernel
150s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31-12-2023 03:08

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General

Target

25c8c67a0c0af415bef188efe60d1593.exe
Size

50KB
MD5

25c8c67a0c0af415bef188efe60d1593
SHA1

9d64f7d83de2f21f2cb524a1611abd9e675a5f58
SHA256

3e1137480ffbee3e517f5c53cb9aef6e9d593ac4c45c289e46f66039cfd8ec87
SHA512

f17532b6d1987e75c95fe883473a8c7c2c54f33add084d9172ee266e6930edb6bd6dcc393c868d32974b776f173a0cc940a3e86354246482182138889427e166
SSDEEP

768:aVIR+EbWjtWh6SDiOVG3dS5VZVIOVJp+liatGi3aSMPhrlj:2IM3UqNpzM5r

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
2644	25c8c67a0c0af415bef188efe60d1593.exe

Adds Run key to start application 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\RUN\MsIMMs32 = "C:\\Windows\\MsIMMs32.exe"	25c8c67a0c0af415bef188efe60d1593.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MsIMMs32.dll	25c8c67a0c0af415bef188efe60d1593.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\MsIMMs32.exe	25c8c67a0c0af415bef188efe60d1593.exe
File opened for modification	C:\Windows\MsIMMs32.exe	25c8c67a0c0af415bef188efe60d1593.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2644	25c8c67a0c0af415bef188efe60d1593.exe
2644	25c8c67a0c0af415bef188efe60d1593.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2644	25c8c67a0c0af415bef188efe60d1593.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 1348	2644	25c8c67a0c0af415bef188efe60d1593.exe	13
PID 2644 wrote to memory of 1348	2644	25c8c67a0c0af415bef188efe60d1593.exe	13

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1348
- C:\Users\Admin\AppData\Local\Temp\25c8c67a0c0af415bef188efe60d1593.exe
  "C:\Users\Admin\AppData\Local\Temp\25c8c67a0c0af415bef188efe60d1593.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2644

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

Replay Monitor

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Downloads

\Windows\SysWOW64\MsIMMs32.dll

Filesize
23KB

MD5
288e53d45d690c36f29f5d24b41ee10b

SHA1
8e89f9826e199cc756f47d7acf642924eb4b853f

SHA256
42b9458ba4a378868c40b0010fe5c01b483770ef0bdc1b27f0f5caab5b0af952

SHA512
3d672a05bcbf9a2a26236c5b72fbad6736868c4334804c124b9873330500c670c039f3a24317d10c7147a823df26d7fd44857c16a3a5378bcf1b46436daa3a2a

Download Submit
memory/1348-2-0x00000000025A0000-0x00000000025A1000-memory.dmp

Filesize
4KB

Download
memory/1348-5-0x00000000025A0000-0x00000000025A1000-memory.dmp

Filesize
4KB

Download
memory/1348-9-0x00000000025B0000-0x00000000025B1000-memory.dmp

Filesize
4KB

Download
memory/2644-10-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2644-13-0x0000000010000000-0x000000001000A000-memory.dmp

Filesize
40KB

Download