f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0

Analysis

max time kernel
152s
max time network
173s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 13:05

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General

Target

f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0.exe
Size

153KB
MD5

b0243a1d988e5098957056b42522cc4d
SHA1

f6a10e09e714e3b61d2d338f86c5fdd97ce4c9fb
SHA256

f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0
SHA512

22ee4726d55219c5ca291dc8409c6044252a05ceccc4676e1534a2c326bb40fb8552a21e2814ee09ab82c1aa29ca2be9bd48001377125f466723a9d4b2d795d8
SSDEEP

3072:3u2PY/bNP86wgQksh1yqE2/pDIDByysDXetyZa/9VGShOHT:VPY/bNPbsHyqE2/SDByysTetga/yHT

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3080	mh1.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\aa.txt	f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0.exe
File created	C:\WINDOWS\bb.txt	f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4148	3080	WerFault.exe	85

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4484 wrote to memory of 3080	4484	f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0.exe	85
PID 4484 wrote to memory of 3080	4484	f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0.exe	85
PID 4484 wrote to memory of 3080	4484	f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0.exe	85

C:\Users\Admin\AppData\Local\Temp\f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0.exe
"C:\Users\Admin\AppData\Local\Temp\f6fcac10f90301fded82d28022cafdf163c1fe3fd1256e22881d42caad100ef0.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4484
- C:\mh1.exe
  "C:\mh1.exe"
  2⤵
  - Executes dropped EXE
  PID:3080
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3080 -s 432
    3⤵
    - Program crash
    PID:4148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3080 -ip 3080
1⤵
PID:1520

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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:\mh1.exe

Filesize
100KB

MD5
c9f4217e3652f498befca8b909d239a6

SHA1
cf349fc339d17ce2e6ba0b0594bf14208a92619c

SHA256
542b2348e5e31fcac424830095d15648ed68bcf9ec640935802539627ea0c0f8

SHA512
bbc5f1df819010d35561b8bd8063d027249314df9e1a1baa40e6997503b2fd8ecc0348225a86595e3f755f98ddce06f927cba40e55931afc5cef1d034244384e

Download Submit
C:\mh1.exe

Filesize
100KB

MD5
c9f4217e3652f498befca8b909d239a6

SHA1
cf349fc339d17ce2e6ba0b0594bf14208a92619c

SHA256
542b2348e5e31fcac424830095d15648ed68bcf9ec640935802539627ea0c0f8

SHA512
bbc5f1df819010d35561b8bd8063d027249314df9e1a1baa40e6997503b2fd8ecc0348225a86595e3f755f98ddce06f927cba40e55931afc5cef1d034244384e

Download Submit