991fd17e2206b6e40ebbbd16d34a45b501cac13a8ef7a4347eecc75e1ebfe7e0

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 01:31

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General

Target

2024-02-24_2f752b3535f7b26ea4a8edeb0c54035b_cryptolocker.exe
Size

32KB
MD5

2f752b3535f7b26ea4a8edeb0c54035b
SHA1

7ad3080ba859d2362e9c75d16a596f5631f33542
SHA256

991fd17e2206b6e40ebbbd16d34a45b501cac13a8ef7a4347eecc75e1ebfe7e0
SHA512

48af3bc1fe7b553e0a2b02ea25eb2e41bbe76b4d2c1a31fafb2adbbfd1626d6150557c0f8119f3778f66905aafd3244fd10f3b182928a6bbbf1f33b7530a0744
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B+OOp:b7o/2n1TCraU6GD1a4Xt9hG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001e597-12.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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	2024-02-24_2f752b3535f7b26ea4a8edeb0c54035b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3752	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 1448 wrote to memory of 3752	1448	2024-02-24_2f752b3535f7b26ea4a8edeb0c54035b_cryptolocker.exe	89
PID 1448 wrote to memory of 3752	1448	2024-02-24_2f752b3535f7b26ea4a8edeb0c54035b_cryptolocker.exe	89
PID 1448 wrote to memory of 3752	1448	2024-02-24_2f752b3535f7b26ea4a8edeb0c54035b_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-24_2f752b3535f7b26ea4a8edeb0c54035b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_2f752b3535f7b26ea4a8edeb0c54035b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3752

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
32KB

MD5
b4135b3b1347db022f6221c47be710b2

SHA1
d4b411935a1e83832eb6eb155bf21bc5cc562b96

SHA256
9371008d157c420e0b48584ff5bd8d3dbeab79dd07d4fda261785f726ae2f7ba

SHA512
29db2e0f08862fdc14427bbec2e876e1e7cbf20776bb1b2a0b1fe39d46bb4a1ab463f8b28efd6e6b97c691c0ceb501f388831315c9b50d31cf5c6d2d22244234

Download Submit
memory/1448-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1448-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1448-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3752-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download