c027e457e94d94dc81156e7658ec06c11f1c19ba61de2292f7c13ca01f361e96

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/04/2024, 12:32

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General

Target

2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe
Size

63KB
MD5

201825187b95b4ea11ed0f4a45efff3e
SHA1

5d98f236a0754b7fe26fe76373dac41b5e1e10da
SHA256

c027e457e94d94dc81156e7658ec06c11f1c19ba61de2292f7c13ca01f361e96
SHA512

0de141240c31b92f65066ccc6d7a9bcdf65bb1cdaf705beeb847da7d68d61b5e1823f96baf28d31117075fbcb0df1b91ff6b55947e65b2add3dc601277e769d2
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293Ci9:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7P

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000014466-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000014466-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2560	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1548	2024-04-22_201825187b95b4ea11ed0f4a45efff3e_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
1548	2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe
2560	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 2560	1548	2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe	28
PID 1548 wrote to memory of 2560	1548	2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe	28
PID 1548 wrote to memory of 2560	1548	2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe	28
PID 1548 wrote to memory of 2560	1548	2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1548
- 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:2560

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
64KB

MD5
de0fde19e700f143273416a6690baf95

SHA1
478e819556ab290ded3e349eaaa1198ffba1ad54

SHA256
d9a963f65f936631e2114c1b070f36c5f4610f4a97da45ffcfc4080e842705fc

SHA512
fd168349b246f0cd7911f9af0583b4d81451bab5693f46e837bc9cdadbb091630eb858919a5e3f9619766f51c0ad3735310c427b74567c76567158018f156f4e

Download Submit
memory/1548-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1548-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1548-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download