a44f583783912034a3a579bec64108b6170a861eb618e8772c7f8ac0a93fea0c

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04-02-2024 05:22

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General

Target

2024-02-04_02150171465604c809e2f1bf6f13651a_cryptolocker.exe
Size

37KB
MD5

02150171465604c809e2f1bf6f13651a
SHA1

61dc85f138b7d5947854184f108c74472abd1f63
SHA256

a44f583783912034a3a579bec64108b6170a861eb618e8772c7f8ac0a93fea0c
SHA512

234bf267e9a1afa4d923490387b0133b58722a64e081a24744d345812ef736af56cfc453fcbf21e5bc07d06f7032e234c57068aa1d561d37b28e9b7e27deb2de
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3OC:bxNrC7kYo1Fxf3s06gYC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023116-12.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	2024-02-04_02150171465604c809e2f1bf6f13651a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4668	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 3384 wrote to memory of 4668	3384	2024-02-04_02150171465604c809e2f1bf6f13651a_cryptolocker.exe	84
PID 3384 wrote to memory of 4668	3384	2024-02-04_02150171465604c809e2f1bf6f13651a_cryptolocker.exe	84
PID 3384 wrote to memory of 4668	3384	2024-02-04_02150171465604c809e2f1bf6f13651a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-04_02150171465604c809e2f1bf6f13651a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_02150171465604c809e2f1bf6f13651a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3384
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:4668

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
b320d4902f02bab39fc61f41150aa2eb

SHA1
283f16cfc61f8c51c72554ddad7d16cc495050e6

SHA256
4dbf4e789f3f6acbf7eb51da5becf52828da30239e66e62db91af190d4dfabc3

SHA512
7fb10cc746d0239d843e31e6b324552ed0b7b58bad9b3fd00362f4beae782053508165c60458f57467790d820e6ada5b452250dd168a6022144b3edde6826d72

Download Submit
memory/3384-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3384-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3384-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4668-17-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/4668-18-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download