ddeb47d972c0c3dc373920d51778b97497986004d47d940e195ecfbaaefda14a

Analysis

max time kernel
145s
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
04/02/2024, 06:34

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General

Target

2024-02-04_8670cc4441c093f75bfdf215afb2041d_cryptolocker.exe
Size

40KB
MD5

8670cc4441c093f75bfdf215afb2041d
SHA1

6a51aed3cfafe6d5cde947ac86d7cac3918c6967
SHA256

ddeb47d972c0c3dc373920d51778b97497986004d47d940e195ecfbaaefda14a
SHA512

00a2111122df8325835c07720a5adf78249563d2c70da5d52a41ffbf10b425a1fa97c7358210d95356cee820e27a5f299121f0caa3bc6302126d51f7bff8e966
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqmY:bc/y2lkF0+BjV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023127-13.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-04_8670cc4441c093f75bfdf215afb2041d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
956	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 2244 wrote to memory of 956	2244	2024-02-04_8670cc4441c093f75bfdf215afb2041d_cryptolocker.exe	83
PID 2244 wrote to memory of 956	2244	2024-02-04_8670cc4441c093f75bfdf215afb2041d_cryptolocker.exe	83
PID 2244 wrote to memory of 956	2244	2024-02-04_8670cc4441c093f75bfdf215afb2041d_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-04_8670cc4441c093f75bfdf215afb2041d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_8670cc4441c093f75bfdf215afb2041d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:956

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
40KB

MD5
a67b4dcde1ca7ab0525601bc4bfca2d3

SHA1
f06914e17faae502603bf27ef9ad944dbd66f4c1

SHA256
79f7a28ddf62c4d262e7a8e77eac64c2c12b52372f28cc1101d787d3379fbf96

SHA512
e73a176f17684d99414ba98d88a7309ed3e178aaec18fff88a2553ea59d98cd84a86191c5793d1c5bfe36dcdd629254952728f911b9eb175527e98c2d7085945

Download Submit
memory/956-21-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/2244-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2244-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2244-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download