969ddca95e4adfa48c3646d88e5365e9ae7ebdebb9bf1191a9adc3414341b3fd

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-02-2024 16:55

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General

Target

2024-02-18_cbf237ec3bd806e64994a72cf3b7d659_cryptolocker.exe
Size

41KB
MD5

cbf237ec3bd806e64994a72cf3b7d659
SHA1

22f3f97f2c4d9193fcde6f7e5cebc30ba8980ae2
SHA256

969ddca95e4adfa48c3646d88e5365e9ae7ebdebb9bf1191a9adc3414341b3fd
SHA512

e7e17a20773bd8eb31f0c3403de0eb805cca677f2caa4ba71c81cf29dba3b398f583f3b228b1fe1445cade45a64cef04c9d35b7d404b38d97cd6af05e16f8d0e
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqrG:bc/y2lkF0+BjrG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023201-12.dat	CryptoLocker_rule2

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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-18_cbf237ec3bd806e64994a72cf3b7d659_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3676	rewok.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 2056 wrote to memory of 3676	2056	2024-02-18_cbf237ec3bd806e64994a72cf3b7d659_cryptolocker.exe	85
PID 2056 wrote to memory of 3676	2056	2024-02-18_cbf237ec3bd806e64994a72cf3b7d659_cryptolocker.exe	85
PID 2056 wrote to memory of 3676	2056	2024-02-18_cbf237ec3bd806e64994a72cf3b7d659_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-18_cbf237ec3bd806e64994a72cf3b7d659_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_cbf237ec3bd806e64994a72cf3b7d659_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2056
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3676

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\rewok.exe

Filesize
41KB

MD5
79eed281e10a96cd09400bc90c756f13

SHA1
14bbae94f0911fde82d06c10ac1ab93520b0c51f

SHA256
9432930616e4694e796f33bdf53a986c1e5134f5110ae503b65fd755c1975ed4

SHA512
a444f26dc02751e362cd96ff359c4362e0e5f77133bba3a03ca69deef5dd9affe197ed760ffd2b322449a9426263bda9c81fe06f7029ed600faec3e7b5018ae7

Download Submit
memory/2056-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2056-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2056-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3676-21-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download