e46a33aa55520a5113e48101778e3ee6914206f6a668fb56acbe2b37b782f4b5

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-02-2024 01:30

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General

Target

2024-02-28_35ce4ba0932620df4d2774786aed3316_cryptolocker.exe
Size

40KB
MD5

35ce4ba0932620df4d2774786aed3316
SHA1

fb380dd8d19855d68d30f638651e1760c593575f
SHA256

e46a33aa55520a5113e48101778e3ee6914206f6a668fb56acbe2b37b782f4b5
SHA512

7120ff8c15e924db466c8740975365ebe27862e547ca4df01e3e9c2e9c0cb31a84e737e0cdf3739aa1cf9aed55bbf4aa868c0608c160084ed0d5c80b97f0037b
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8POKfo:bIDOw9a0Dwo3P1ojvUSDhe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001000000002313b-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-02-28_35ce4ba0932620df4d2774786aed3316_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3528	lossy.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 4540 wrote to memory of 3528	4540	2024-02-28_35ce4ba0932620df4d2774786aed3316_cryptolocker.exe	90
PID 4540 wrote to memory of 3528	4540	2024-02-28_35ce4ba0932620df4d2774786aed3316_cryptolocker.exe	90
PID 4540 wrote to memory of 3528	4540	2024-02-28_35ce4ba0932620df4d2774786aed3316_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-28_35ce4ba0932620df4d2774786aed3316_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_35ce4ba0932620df4d2774786aed3316_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4540
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3528

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\lossy.exe

Filesize
41KB

MD5
59270c6ab964490f8bc4f90e75ec6a94

SHA1
73d159d297ce229e024d1b473e03acca7d10a1d7

SHA256
b82b8c2fc4078ffea3fec7c38feed4344ace4eff3f0cb84cba0fe7a7c73190a8

SHA512
ba9cb0b150fcf6880787e21f4159c88693528f090283eb2f3033ee1d57d23a91b85a7b0eb9c8a6790175bdbbd35bca0b6c9a54fea4f565bbec08ca0616668568

Download Submit
memory/3528-17-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/3528-19-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4540-0-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4540-1-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4540-2-0x0000000002220000-0x0000000002226000-memory.dmp

Filesize
24KB

Download