7f761cb5e69382c437f75d5b7346d10432b57467539c1d1e8e0ef4076731da73

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
22/05/2024, 02:53

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General

Target

2024-05-22_e947769d03aa05917dc89322743472a0_cryptolocker.exe
Size

45KB
MD5

e947769d03aa05917dc89322743472a0
SHA1

441e6e6b745a477aedcb2bbc52bc2b3ce93b4532
SHA256

7f761cb5e69382c437f75d5b7346d10432b57467539c1d1e8e0ef4076731da73
SHA512

9f5c79159d6f6d45cec1a4f8e3fd079261accd405a433a57caafb355931fa45ec932483ebf85721967b7467aaf7146e58ec9ee0c9018031ad9e9556467a31ab0
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxO:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000141a2-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000141a2-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3060	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2360	2024-05-22_e947769d03aa05917dc89322743472a0_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
2360	2024-05-22_e947769d03aa05917dc89322743472a0_cryptolocker.exe
3060	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 3060	2360	2024-05-22_e947769d03aa05917dc89322743472a0_cryptolocker.exe	28
PID 2360 wrote to memory of 3060	2360	2024-05-22_e947769d03aa05917dc89322743472a0_cryptolocker.exe	28
PID 2360 wrote to memory of 3060	2360	2024-05-22_e947769d03aa05917dc89322743472a0_cryptolocker.exe	28
PID 2360 wrote to memory of 3060	2360	2024-05-22_e947769d03aa05917dc89322743472a0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-22_e947769d03aa05917dc89322743472a0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_e947769d03aa05917dc89322743472a0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:3060

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

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
45KB

MD5
4e14221b11426725d173ada9dfdf3bd1

SHA1
fbd5d1479737ce4db7c89fbf44bff4faadba727d

SHA256
407a06105a139b0c70bceef036dee3630a0f9dc19a3fa1ab5920224e062e5443

SHA512
0c74f89a25be0c135b3d81fce3e52b4ef9304ee495acbe8dff692a52df62d28c17ad1e502fd01b5514b660bb2182d6f03a2ea5e67b1c6fb0c2f57a291845af66

Download Submit
memory/2360-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2360-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2360-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download