99310e874034128a1e83b2b3958463d22f93c434fcea23eded44e3a2893ebbad

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 05:51

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General

Target

2024-02-04_c36f95e41cd477c3c89b8a606ab93e1d_cryptolocker.exe
Size

36KB
MD5

c36f95e41cd477c3c89b8a606ab93e1d
SHA1

d143f65876191e8f513eac3d4fa434c78ddc2fad
SHA256

99310e874034128a1e83b2b3958463d22f93c434fcea23eded44e3a2893ebbad
SHA512

c87d967143dcd11d90bd0f7ea3a26e9b39434c38c240029ffecc3f095d083c79418df113a07dfeb1b0a8dedff3d2afeb65f72c64f07c8adcc1e96b65810c17be
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3OS:bxNrC7kYo1Fxf3s06gYS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002313b-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-04_c36f95e41cd477c3c89b8a606ab93e1d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1392	pissa.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 1356 wrote to memory of 1392	1356	2024-02-04_c36f95e41cd477c3c89b8a606ab93e1d_cryptolocker.exe	88
PID 1356 wrote to memory of 1392	1356	2024-02-04_c36f95e41cd477c3c89b8a606ab93e1d_cryptolocker.exe	88
PID 1356 wrote to memory of 1392	1356	2024-02-04_c36f95e41cd477c3c89b8a606ab93e1d_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-04_c36f95e41cd477c3c89b8a606ab93e1d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_c36f95e41cd477c3c89b8a606ab93e1d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1356
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:1392

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\pissa.exe

Filesize
37KB

MD5
b35e456340c197d8c4be0692a204e819

SHA1
18ea4a7502086a5479f222b501f918876578c8c8

SHA256
f24d88e0b078e6dd5b6c1794ac9eaeff6fcc016e123cd3ac5344869c654e64a9

SHA512
438a3ab181c8b37539f22f0754ea3486d3c1c5f400d704afc4ff94994e340d35a3907ad77d1665d8b4f3d1276dd7b9959d164246e02affdac7cba96a1727430f

Download Submit
memory/1356-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1356-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1356-2-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download
memory/1392-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1392-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download