42133e09911b566d50ea8aab7ce6e8dcfb75db03f648be5fdaa5068bddf0e9b8

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 15:37

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General

Target

2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe
Size

42KB
MD5

1e42565b26ac8fc46514da160186e31b
SHA1

919be4aa17ac96423435971d70789a78917429fd
SHA256

42133e09911b566d50ea8aab7ce6e8dcfb75db03f648be5fdaa5068bddf0e9b8
SHA512

fa34983d400b340d056a14e50b69435bef7ed6a04ca073a719b871f46545871bae86d790889fb8e2dfe5bed745854e5a2a26f035f15483feeae73b2a1aa40409
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqB:bc/y2lkF0+BeqB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023215-12.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2588	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 3284 wrote to memory of 2588	3284	2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe	87
PID 3284 wrote to memory of 2588	3284	2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe	87
PID 3284 wrote to memory of 2588	3284	2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3284
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2588

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
42KB

MD5
05a37b660ff5d3dfe3a83094d845a65b

SHA1
a31c177eb5493c6bae0d1e26f7d8196682258126

SHA256
8f178f116cc350af0394c8971e84f51e873e639be1ce54c6a18a8dac205a392e

SHA512
d68df0846581c2341c532596bc322d47087df0189a4097ea74fd30d639ee7012b82283228115cb487b5d0676472a940da7c65cadd98e50aa43abccb820182647

Download Submit
memory/2588-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3284-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/3284-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/3284-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download