fbc1f90571ab347149ed0fc82a7fcf422d66535b21262860511fee6667a749a7

Analysis

max time kernel
140s
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
13/02/2024, 10:25

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General

Target

2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe
Size

43KB
MD5

179ac054b07b72bd7e40d6f94e506fed
SHA1

5ab2563c3a9be72d5966d013560b9a6354665db8
SHA256

fbc1f90571ab347149ed0fc82a7fcf422d66535b21262860511fee6667a749a7
SHA512

d6339238533e61f995fa73e94c22828dcb26b4cf5624ac845774cb2a15e253b69a89aaef4dd405447b3d671b916ad63210277dee8a329361c8e6d98ed6cc47c6
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphedj:bc/y2lkF0+Be8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023135-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
924	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 1944 wrote to memory of 924	1944	2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe	83
PID 1944 wrote to memory of 924	1944	2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe	83
PID 1944 wrote to memory of 924	1944	2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:924

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
23894b2e75fab84d4056b9d52632f6f4

SHA1
38115b418dc87cc8f011756e7caa1942dfe15d39

SHA256
91b808a888260e6144f7cacbe620cd151df4dd51ab752a048d755b5b6c70649f

SHA512
d250832be0b3bc91df5ad51b95d5b33fbed93501e9cda19457d6d4813e162329ecd193d3c25afc4cd64f256f34e4d620fcd0860963c2aa34f5e6276b6afe5898

Download Submit
memory/924-20-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1944-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1944-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1944-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download