e8708fdd2bfc4d75b3ce0739876709a127dd2402ee29ed30728be14808f41c6a

Analysis

max time kernel
143s
max time network
150s
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 16:39

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General

Target

2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe
Size

44KB
MD5

6891c507c6fee69ba24013da74ca3e8a
SHA1

1c54aa2c4b086d74485040e5ff5e98f22b61bb82
SHA256

e8708fdd2bfc4d75b3ce0739876709a127dd2402ee29ed30728be14808f41c6a
SHA512

77077b758595826b0ffec5364cb773f38d5670aa87e9d96aed41997c2faf07b9c2d7ffbd2d4892db48bfc8e603cf9a232505392590eb496320b1cce00df939cf
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphedq:bc/y2lkF0+BeJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023239-12.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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2908	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 3992 wrote to memory of 2908	3992	2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe	83
PID 3992 wrote to memory of 2908	3992	2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe	83
PID 3992 wrote to memory of 2908	3992	2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2908

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
44KB

MD5
3d8bfec5a8cf6794b28f002231077193

SHA1
972c2ad3434771259db2747e15a10b945274a274

SHA256
99cfde9b18069e7915d2c71ee500fd236c31fff979cede1a7086fb6d00ed5961

SHA512
0fd2883a23f829523329a9d7df087190e60d72080bd42f3716d0ade4be0cb422da56f65f7b1eaa226e822ada0d3d277ad36d8b4713e02146731c0c0384d583c9

Download Submit
memory/3992-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3992-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3992-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download