603178ab797bcb27517ac1eeb82edf6365779981fb98e86c43e2282028df6004

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 07:58

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General

Target

2024-02-13_8f2fdcec8df50d3397b73c941dae15d0_cryptolocker.exe
Size

51KB
MD5

8f2fdcec8df50d3397b73c941dae15d0
SHA1

bd20752c446cc8827a7982f99173e13910f5b0fc
SHA256

603178ab797bcb27517ac1eeb82edf6365779981fb98e86c43e2282028df6004
SHA512

68fc18a5fefd538e37fd9ff7273bc6c494d555541d4ff42f575301c9a30146103c2539dd3b00ef9a82d3bca038df75a53c22ef802d35b9c927b2086f098afa56
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszd:79mqyNhQMOtEvwDpjBxe8TpXRSd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2180-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001224c-11.dat	CryptoLocker_rule2
behavioral1/memory/2180-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2364-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2180-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001224c-11.dat	CryptoLocker_set1
behavioral1/memory/2180-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2364-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2364	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2180	2024-02-13_8f2fdcec8df50d3397b73c941dae15d0_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 2364	2180	2024-02-13_8f2fdcec8df50d3397b73c941dae15d0_cryptolocker.exe	28
PID 2180 wrote to memory of 2364	2180	2024-02-13_8f2fdcec8df50d3397b73c941dae15d0_cryptolocker.exe	28
PID 2180 wrote to memory of 2364	2180	2024-02-13_8f2fdcec8df50d3397b73c941dae15d0_cryptolocker.exe	28
PID 2180 wrote to memory of 2364	2180	2024-02-13_8f2fdcec8df50d3397b73c941dae15d0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-13_8f2fdcec8df50d3397b73c941dae15d0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_8f2fdcec8df50d3397b73c941dae15d0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2364

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\asih.exe

Filesize
52KB

MD5
32c7606c5c4bb8fa8bec02777176d672

SHA1
e1fd5cc91a51c1be3f3924923f9ac56eed97396f

SHA256
c1d7410f6cd2b4d72d1d352b8505db3b282af849d7282d9a199c92072187c5d6

SHA512
ce27e697a7bfef8d4268232b783c3052721019812d3f66b1581c08d2afcb01278ec517ea5c8933075edd66bddf863b4e1820ff983d798cef82d4dd91d1c97076

Download Submit
memory/2180-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2180-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2180-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2180-3-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2180-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2364-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2364-18-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2364-21-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download