f64f791bc818985e4bd084256dc57eaec55d78f549f0b4d0bc4079a6efe4379b

Analysis

max time kernel
143s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 22:29

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General

Target

2024-02-01_e74702dcf0e1eaad306efe7fffe08ccb_cryptolocker.exe
Size

36KB
MD5

e74702dcf0e1eaad306efe7fffe08ccb
SHA1

70fd7f543f64973fd38bce176f4ce6b08bb03573
SHA256

f64f791bc818985e4bd084256dc57eaec55d78f549f0b4d0bc4079a6efe4379b
SHA512

b9ae9ddc30229012a612c1bc8b063f0b4ab641a5a05880a17ba133d25677844cbdff2fef8d4a11da5b3170f0e136621cd9312f56ec12a710466cf6e89909f29c
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3O3:bxNrC7kYo1Fxf3s06gY3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023237-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-01_e74702dcf0e1eaad306efe7fffe08ccb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4352	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 3760 wrote to memory of 4352	3760	2024-02-01_e74702dcf0e1eaad306efe7fffe08ccb_cryptolocker.exe	86
PID 3760 wrote to memory of 4352	3760	2024-02-01_e74702dcf0e1eaad306efe7fffe08ccb_cryptolocker.exe	86
PID 3760 wrote to memory of 4352	3760	2024-02-01_e74702dcf0e1eaad306efe7fffe08ccb_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-01_e74702dcf0e1eaad306efe7fffe08ccb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_e74702dcf0e1eaad306efe7fffe08ccb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3760
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:4352

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
912156013029612988adbf2d3e015703

SHA1
ab4916d8d18d0bf1d6729b4242e4a77d91161b24

SHA256
b924a6b5377fc577ead9737f36dc98920f85251ad955862c765329b379dfa4e4

SHA512
b2779a5fc8c38bcdf8ded35db1c0342a02d4295a6df3d45ab65147da64ab394f27dd16dbd0dc1136cc70cf4d2b4b482d660887fca971bbb94302a02ee8c649d1

Download Submit
memory/3760-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3760-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3760-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4352-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4352-18-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download