71f90df72324f318b89087d7fa60e26821f56216b2cddd4ff20423cb2851f933

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
09-05-2024 04:43

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General

Target

2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe
Size

52KB
MD5

863e25a4fcd3a7b94ca61b1b78bc4425
SHA1

586d5851e9c40e31f327db0d4cfc2d825f39bcbb
SHA256

71f90df72324f318b89087d7fa60e26821f56216b2cddd4ff20423cb2851f933
SHA512

7381768a5cb0dbd4380e511d37e1ac627d744df8bbf2526d927ca76353850049118b9901802d94c2a86b806c8689324bccadc2d0d4f716dca9b288fd86a18ef8
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIIZw:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014323-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014323-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2668	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2984	2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_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
2984	2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe
2668	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2984 wrote to memory of 2668	2984	2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe	28
PID 2984 wrote to memory of 2668	2984	2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe	28
PID 2984 wrote to memory of 2668	2984	2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe	28
PID 2984 wrote to memory of 2668	2984	2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2984
- 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:2668

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
52KB

MD5
8bd19c6b66fec89003fcafa3b5f833ca

SHA1
d6c94b76b5f1e0a729180684f16cc91ef917a6f3

SHA256
b8f487ce646f8122ebc83fc728dcf11cdbafb3bc4a71b42464af1bdd40fb7dde

SHA512
698690de6dc5ae675b606eccd20ba4971d9eef88e00e451b3bb1fb1c6ebd27ab53b942503eee08e54ffb02c3f47dcb7a37358130266d08c82078c69ce6b41744

Download Submit
memory/2984-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2984-8-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2984-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download