f0b5281a6d583ad04085085f720c5f5b39b7e38cdc42c89b3e2a6b4ad65ab16d

Analysis

max time kernel
160s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07-03-2024 22:26

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General

Target

2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe
Size

90KB
MD5

35cdab0a341549d97eea832136aa8515
SHA1

c681d59cef385bc836e8c1d8f4e3ce61650e41f7
SHA256

f0b5281a6d583ad04085085f720c5f5b39b7e38cdc42c89b3e2a6b4ad65ab16d
SHA512

7f3562c155d01d9bfd777831beb8f82029f66585a51b93b39d8910250f00f38f85d81041b61f3167ee685cb63b21831007a784a77e7e05e0827dc7c972f1a011
SSDEEP

1536:vj+jsMQMOtEvwDpj5H8u8rBN6nqEZNi1OkQNpAi:vCjsIOtEvwDpj5H8zPsT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023231-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023231-12.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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3608	misid.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 1968 wrote to memory of 3608	1968	2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe	89
PID 1968 wrote to memory of 3608	1968	2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe	89
PID 1968 wrote to memory of 3608	1968	2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3608

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\misid.exe

Filesize
90KB

MD5
11019863186ac24dbf6c52dddfcfe99b

SHA1
e50c4f7a2c5e9b90266fd1c697629b14ca193f7b

SHA256
af1e2355a93d496204e66d1750e5773c2bed521648e2b48596c7610fb161e517

SHA512
346fc96b6287f3384b0c08ed3ff0c18f5bbba19fcad40cf20c7928e27bfca387238510db84a9a0e3fa8fe62dd0fa7a8fcb45c432527f80c495c40ce032afd4b4

Download Submit
memory/1968-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1968-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1968-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3608-17-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/3608-18-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download