4022f934e411331c8f8eafb595b68c77a12e59d218468f6874e66eabcafd8ac8

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 16:56

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General

Target

2024-05-28_3fefd69d58045de961a247f947030cb6_cryptolocker.exe
Size

37KB
MD5

3fefd69d58045de961a247f947030cb6
SHA1

fd3609e3c4016f34869b848d5ce3f7471d46cc72
SHA256

4022f934e411331c8f8eafb595b68c77a12e59d218468f6874e66eabcafd8ac8
SHA512

e8a951d029341eec8681e7cc587434b38bc8a04fe03f470a8974f30c1ffb191d18889013ff11ae1ee13d44cba6e894318ac89353d337e2d3ba17ef7909c655db
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSyk:btB9g/WItCSsAGjX7e9N0hunRvk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233f9-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-28_3fefd69d58045de961a247f947030cb6_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
3956	gewos.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 3792 wrote to memory of 3956	3792	2024-05-28_3fefd69d58045de961a247f947030cb6_cryptolocker.exe	83
PID 3792 wrote to memory of 3956	3792	2024-05-28_3fefd69d58045de961a247f947030cb6_cryptolocker.exe	83
PID 3792 wrote to memory of 3956	3792	2024-05-28_3fefd69d58045de961a247f947030cb6_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-28_3fefd69d58045de961a247f947030cb6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_3fefd69d58045de961a247f947030cb6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3792
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3956

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

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Downloads

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

Filesize
37KB

MD5
96354ff65bfc584371e9f472f56b84af

SHA1
20442c8b1762b2445d867a5fef0f995d3effe7c3

SHA256
f8d3fb178a2a2ea7058e05bf0cc351884a3453b56132ff8df8a198df53ea2951

SHA512
818718032f2da86ee9bd7e26e7133d629c2f082882df2d3fdf74b33d2c00b6e87f35a409faa3c8b5489cbf8b276995d9c7cc18c5aebee5bb4d53289d29d922c2

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
dcbaf05896d2a767930e381316e87853

SHA1
adaabc85bfbaf9cfe3fe77f7723b5e260a27c9e6

SHA256
804f2b84aa96f215834e908b6847a7961476029103f290aaa5ba9a6a407fb0ac

SHA512
dc29a6d502331919632e0617d2845927524d5bba07a083032053192fc2e149e2205a58c7fd063dc7cdc3d00ba1352f35de513f61cc1839f5c06f91fcf4e332bb

Download Submit
memory/3792-0-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/3792-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3792-8-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/3956-25-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download