38854629e5898370d4f3f37830f507426f61eae342a0097c2a1b3da95b85521e

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2024, 22:23

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-01-27_23f2d3a1f1386f25b52a30ff8239e239_cryptolocker.exe
Size

38KB
MD5

23f2d3a1f1386f25b52a30ff8239e239
SHA1

62c87772fbceae6cca843969815db47bcebc82ee
SHA256

38854629e5898370d4f3f37830f507426f61eae342a0097c2a1b3da95b85521e
SHA512

e948a11cff67c3534670afc9375b9133ea1fcbd62bd2e63e3651efec3d3b1b076924068ba021e837b0f976eecff7a44c34ac545237672561496cd7ede26bd278
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcI:X6QFElP6n+gJQMOtEvwDpjBsYK5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023224-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023224-12.dat	CryptoLocker_set1

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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-01-27_23f2d3a1f1386f25b52a30ff8239e239_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4092	asih.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 4092	2952	2024-01-27_23f2d3a1f1386f25b52a30ff8239e239_cryptolocker.exe	91
PID 2952 wrote to memory of 4092	2952	2024-01-27_23f2d3a1f1386f25b52a30ff8239e239_cryptolocker.exe	91
PID 2952 wrote to memory of 4092	2952	2024-01-27_23f2d3a1f1386f25b52a30ff8239e239_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-01-27_23f2d3a1f1386f25b52a30ff8239e239_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_23f2d3a1f1386f25b52a30ff8239e239_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
38KB

MD5
4a22f65a27c8b6adfa66254946b961ed

SHA1
86aef4881127d203e13115ef44a62f4194f61950

SHA256
feb84780b2efb2e44aede1bd5c75c745f494ce2fdb06f54e91b21b0a28250927

SHA512
9b27cd4f2e22884e0c7b178aaa35cca379f3b5957805bf66a5d82e7135fd76cfbd6e702672297b286756639e054847f6970bad7856fa9240d1654dff3d558d82

Download Submit
memory/2952-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2952-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2952-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4092-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4092-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download