e72214ad43d569868245c1c199e75610f1ec6b558f83812aa8419439ab8f1e79

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
02/05/2024, 00:38

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General

Target

2024-05-02_40235881e44ee15700f6f5ca129e95ff_cryptolocker.exe
Size

71KB
MD5

40235881e44ee15700f6f5ca129e95ff
SHA1

42a3b5130f5ef7f20514efd4075ca78e72c30d41
SHA256

e72214ad43d569868245c1c199e75610f1ec6b558f83812aa8419439ab8f1e79
SHA512

c5c75a81f87d7883cb4230528f5d651040a544e0c535ec346aed0635b6edc7a4adebd8d275dbb35a9aff73639d366bcd664837ec41b2f6103fd0e2aba6ad1aa9
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs94:C4Q2c94OtEvwDpj4H8zh

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1876-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000122ee-11.dat	CryptoLocker_rule2
behavioral1/memory/1876-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3044-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/1876-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3044-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1876-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b0000000122ee-11.dat	UPX
behavioral1/memory/1876-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3044-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3044	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1876	2024-05-02_40235881e44ee15700f6f5ca129e95ff_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1876-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b0000000122ee-11.dat	upx
behavioral1/memory/1876-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3044-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 1876 wrote to memory of 3044	1876	2024-05-02_40235881e44ee15700f6f5ca129e95ff_cryptolocker.exe	28
PID 1876 wrote to memory of 3044	1876	2024-05-02_40235881e44ee15700f6f5ca129e95ff_cryptolocker.exe	28
PID 1876 wrote to memory of 3044	1876	2024-05-02_40235881e44ee15700f6f5ca129e95ff_cryptolocker.exe	28
PID 1876 wrote to memory of 3044	1876	2024-05-02_40235881e44ee15700f6f5ca129e95ff_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-02_40235881e44ee15700f6f5ca129e95ff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_40235881e44ee15700f6f5ca129e95ff_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1876
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3044

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\misid.exe

Filesize
71KB

MD5
1c5b208cc63dd510f87858c4410d6369

SHA1
bc6f80a7d74bce85fc21fd9781425113c741a916

SHA256
87a43d38685d84f0c122432a3b397327ad42830da48da6d824c327d8e4e860f9

SHA512
86a63308e33f40ccc3c5c27e4bea363423fd590e8a7b326af2c3bfe4b10ed8ae0ffe95b26c49725289fe31f74bb334390dc6c74dc2d41a09a90b5cda57007faf

Download Submit
memory/1876-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1876-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1876-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1876-3-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1876-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-19-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/3044-26-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3044-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download