99ee0db24fe6ab956bfe2e1c749f6e570eefcdaaeed3626c7a0fbfb50b881986

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/01/2024, 00:55

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General

Target

2024-01-24_c1d41fb892cebdc23d82aad9148615fc_cryptolocker.exe
Size

43KB
MD5

c1d41fb892cebdc23d82aad9148615fc
SHA1

1138ce06ba9d9d8ecfa6499ec7e0bb21e4182e2a
SHA256

99ee0db24fe6ab956bfe2e1c749f6e570eefcdaaeed3626c7a0fbfb50b881986
SHA512

16dcfdc5fdf59b2acc3bb9bfc7b38bc3f7a60ab6e6bd3140ca542c27e159e04d4eba98ed42cc9231b8aa3d2b9d1319d7b2efd4bc6bebea0c10526de26480f34a
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxj:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001233b-13.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001233b-13.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1600	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2652	2024-01-24_c1d41fb892cebdc23d82aad9148615fc_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2652	2024-01-24_c1d41fb892cebdc23d82aad9148615fc_cryptolocker.exe
1600	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 1600	2652	2024-01-24_c1d41fb892cebdc23d82aad9148615fc_cryptolocker.exe	14
PID 2652 wrote to memory of 1600	2652	2024-01-24_c1d41fb892cebdc23d82aad9148615fc_cryptolocker.exe	14
PID 2652 wrote to memory of 1600	2652	2024-01-24_c1d41fb892cebdc23d82aad9148615fc_cryptolocker.exe	14
PID 2652 wrote to memory of 1600	2652	2024-01-24_c1d41fb892cebdc23d82aad9148615fc_cryptolocker.exe	14

C:\Users\Admin\AppData\Local\Temp\hurok.exe
"C:\Users\Admin\AppData\Local\Temp\hurok.exe"
1⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:1600

C:\Users\Admin\AppData\Local\Temp\2024-01-24_c1d41fb892cebdc23d82aad9148615fc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_c1d41fb892cebdc23d82aad9148615fc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\hurok.exe

Filesize
44KB

MD5
c270d718665d1a689a7249056f71d06e

SHA1
343356fa9b30960946413ff875de09dd0b3e2a1e

SHA256
a70b9bde9efb20587f88ddc93462c285115e956a576f3c7c6539d64a75facb9e

SHA512
562e7421e504c617ad2fead19de98f9b7faa43fce90ba72da3b471fca0828f244fa0b47e36c7b05faa5dd7e07de0362c5ffede3df4e36fbd391d83005bf39992

Download Submit
memory/1600-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2652-7-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2652-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2652-0-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download