b74790ec347ffebadb9aa0fc70c5cb166efc42b93d0e6302794d25f1b1880533

Analysis

max time kernel
148s
max time network
154s
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, 05:46

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General

Target

2024-02-13_a2b42683a65f63de96973976524b7a3a_cryptolocker.exe
Size

99KB
MD5

a2b42683a65f63de96973976524b7a3a
SHA1

fdf64d254adecddb84eea72f9b63c4a8730b03ee
SHA256

b74790ec347ffebadb9aa0fc70c5cb166efc42b93d0e6302794d25f1b1880533
SHA512

d706208fcafa1286e05f4cc69cae1fd8cc503733920cb6a51192cf5ceeac4467e29b551ba04d0ed2bd6cace62ba1db5d4a199cf7e470cd4ab43b3b4b869e7f95
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCWwi:26a+2OtEvwDpjtzF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023217-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023217-12.dat	CryptoLocker_set1

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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-13_a2b42683a65f63de96973976524b7a3a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3620	asih.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 3608 wrote to memory of 3620	3608	2024-02-13_a2b42683a65f63de96973976524b7a3a_cryptolocker.exe	85
PID 3608 wrote to memory of 3620	3608	2024-02-13_a2b42683a65f63de96973976524b7a3a_cryptolocker.exe	85
PID 3608 wrote to memory of 3620	3608	2024-02-13_a2b42683a65f63de96973976524b7a3a_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-13_a2b42683a65f63de96973976524b7a3a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_a2b42683a65f63de96973976524b7a3a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3620

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\asih.exe

Filesize
99KB

MD5
c921c5f4853b84ec0ea65db037731be4

SHA1
c7f1c4d3cfc4b8470b9de7c2f2d7582f127c65ee

SHA256
b1cfbcc0d5d3c14762e08e6b0cb4d976d94f55e626e5c811ebc2b7c56f683f4b

SHA512
820c51f014a8e1481338cb33a38e052de2026e8bbe900d14f3bb6d6f2b30c9680da3b69269161ab146a90061a3986d71f19269ac80e2efaef1f1a7d2993b9eb5

Download Submit
memory/3608-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/3608-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/3608-2-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/3620-17-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3620-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download