89f4e6f09f76e3796c497a0e146a69246669592d75e212e0fbb2a79c2851dc92

Analysis

max time kernel
86s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
14-02-2024 03:05

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General

Target

2024-02-14_e67f2c82fa3c9c9d650c10e7890102c1_cryptolocker.exe
Size

37KB
MD5

e67f2c82fa3c9c9d650c10e7890102c1
SHA1

cceed76d49a9f575f56a0a11c408a8e7fef24085
SHA256

89f4e6f09f76e3796c497a0e146a69246669592d75e212e0fbb2a79c2851dc92
SHA512

ebba0036be2bcf2bec7cf8267ac0694c2fba1e95029481b94ff18b494512089638fab671fd8b4307ab19261d79544a1e412ff0583b6e67454c0b97a11ee7fb0c
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRClp:btB9g/WItCSsAGjX7e9N0hunRClp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231ea-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	gewos.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-14_e67f2c82fa3c9c9d650c10e7890102c1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4080	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 1544 wrote to memory of 4080	1544	2024-02-14_e67f2c82fa3c9c9d650c10e7890102c1_cryptolocker.exe	83
PID 1544 wrote to memory of 4080	1544	2024-02-14_e67f2c82fa3c9c9d650c10e7890102c1_cryptolocker.exe	83
PID 1544 wrote to memory of 4080	1544	2024-02-14_e67f2c82fa3c9c9d650c10e7890102c1_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-14_e67f2c82fa3c9c9d650c10e7890102c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_e67f2c82fa3c9c9d650c10e7890102c1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1544
- 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:4080

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
fb77002ff91577700af9560189ba44bf

SHA1
7bfdb7f69e0297f43b1f7a861b860ac216f18fb8

SHA256
161fa3d1dbdaa53098cf0a17fcdae1f60132f417ce828c0f70053aa33ba8986d

SHA512
1b2ec71aab96abf7c95516fd168751be1d1af43a5498983923755197e4da0061d4b675f8fb184a52bfc49f0ff0d3c311d99baee90959ef4e4dd0e43bd9e606df

Download Submit
memory/1544-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1544-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1544-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4080-21-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download