3ba2bdcaf5a02f2f6282e25db3d247e958c6719b4e4b424ab73ebf51e618e752

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 08:23

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General

Target

caef20dc44a9502c2a50db1d573ed501.exe
Size

44KB
MD5

caef20dc44a9502c2a50db1d573ed501
SHA1

78193abcafa07aacbfd409859ff99373c6914c4a
SHA256

3ba2bdcaf5a02f2f6282e25db3d247e958c6719b4e4b424ab73ebf51e618e752
SHA512

2666d4a54fc7948226261cb4d07ad4e66b7650f04643d9b2c6b7e8fc2cbe159f69873e696ea92207e9f6f9e84530260b9bf3843194b33e8fe45abd8ce46080fd
SSDEEP

768:GF0DJDwv3mR/HTkXoZOlDWkPaFE9+e4UPqFbzOhvHT75UPgSBfCv:GyDRwi7kXo2Ra+YHsqS3KYSBfCv

Score

8^/10

persistence

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\run	ishost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\ishost.exe = "ishost.exe"	ishost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	caef20dc44a9502c2a50db1d573ed501.exe

Executes dropped EXE 2 IoCs

pid	Process
3076	ishost.exe
4764	ismon.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ishost.exe	caef20dc44a9502c2a50db1d573ed501.exe
File opened for modification	C:\Windows\SysWOW64\ishost.exe	caef20dc44a9502c2a50db1d573ed501.exe
File created	C:\Windows\SysWOW64\ismon.exe	ishost.exe
File created	C:\Windows\SysWOW64\components\flx0.dll	ishost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4152	caef20dc44a9502c2a50db1d573ed501.exe
4152	caef20dc44a9502c2a50db1d573ed501.exe
3076	ishost.exe
3076	ishost.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe
3076	ishost.exe
3076	ishost.exe
4764	ismon.exe
4764	ismon.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4152	caef20dc44a9502c2a50db1d573ed501.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4152 wrote to memory of 3076	4152	caef20dc44a9502c2a50db1d573ed501.exe	88
PID 4152 wrote to memory of 3076	4152	caef20dc44a9502c2a50db1d573ed501.exe	88
PID 4152 wrote to memory of 3076	4152	caef20dc44a9502c2a50db1d573ed501.exe	88
PID 3076 wrote to memory of 4764	3076	ishost.exe	89
PID 3076 wrote to memory of 4764	3076	ishost.exe	89
PID 3076 wrote to memory of 4764	3076	ishost.exe	89
PID 4152 wrote to memory of 1476	4152	caef20dc44a9502c2a50db1d573ed501.exe	90
PID 4152 wrote to memory of 1476	4152	caef20dc44a9502c2a50db1d573ed501.exe	90
PID 4152 wrote to memory of 1476	4152	caef20dc44a9502c2a50db1d573ed501.exe	90

C:\Users\Admin\AppData\Local\Temp\caef20dc44a9502c2a50db1d573ed501.exe
"C:\Users\Admin\AppData\Local\Temp\caef20dc44a9502c2a50db1d573ed501.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4152
- C:\Windows\SysWOW64\ishost.exe
  C:\Windows\system32\ishost.exe
  2⤵
  - Adds policy Run key to start application
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3076
- - C:\Windows\SysWOW64\ismon.exe
    C:\Windows\system32\ismon.exe
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:4764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\CAEF20~1.EXE > nul
  2⤵
  PID:1476

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\ishost.exe

Filesize
27KB

MD5
7e9830d931fc68f6a58ec535a308c148

SHA1
b16e35e28264e5ed11bec85c2c7a39e768105de9

SHA256
7b7e6a4562c37b7cf02a95a94c69ac467166df7c5cae9709bcd89c8ac28c6782

SHA512
5ce8cb7a904db9d25b5a66c804c4248aaf5e2430d3270d623f33a813af389aab5e69297970a4c45f0542db372a7a3c629d8d3337d4539b92babb01b73fb429dd

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C:\Windows\SysWOW64\ismon.exe

Filesize
5KB

MD5
c96468d9e0a7954f9614470ae0df8331

SHA1
478650185a342538e8c00061c7cbd6fcf46a64b8

SHA256
b3ab243c9dac91be82605bf2ba7b9c41c2a5af9bb82ced14b444314575e706bb

SHA512
89591244e83a821fbaa796288543720652314def792a6acbbd5e836621b16ad0777f489037e729f9feeba3cb5a23fd7169e5d0a2b8d162edc27dd9e8c5d13c79

Download Submit