b3373e05a0c094d1c601b5315f524ea75742c86091a19e5a6bec9501efd9f864

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
25/05/2024, 03:28

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General

Target

2024-05-25_220183e5c9541cb21a4aabb39f78928a_cryptolocker.exe
Size

70KB
MD5

220183e5c9541cb21a4aabb39f78928a
SHA1

cde1a57c4cd9044adc20da968dcd970716e9f6aa
SHA256

b3373e05a0c094d1c601b5315f524ea75742c86091a19e5a6bec9501efd9f864
SHA512

425dd26b9f3c393c5138ef8834a2af65751728e323a4ae6c15e4d45d0c72f9200e4cf863daf77a7757e99860f9b9e698839d14d0740c17689c70f71895ee77ff
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs96:C4Q2c94OtEvwDpj4H8zP

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2556-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012289-11.dat	CryptoLocker_rule2
behavioral1/memory/2556-13-0x0000000002840000-0x0000000002850000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2556-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2604-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/2556-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2604-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2556-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012289-11.dat	UPX
behavioral1/memory/2556-13-0x0000000002840000-0x0000000002850000-memory.dmp	UPX
behavioral1/memory/2556-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2604-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2604	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2556	2024-05-25_220183e5c9541cb21a4aabb39f78928a_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2556-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000012289-11.dat	upx
behavioral1/memory/2556-13-0x0000000002840000-0x0000000002850000-memory.dmp	upx
behavioral1/memory/2556-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2604-27-0x0000000000500000-0x0000000000510000-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 2556 wrote to memory of 2604	2556	2024-05-25_220183e5c9541cb21a4aabb39f78928a_cryptolocker.exe	28
PID 2556 wrote to memory of 2604	2556	2024-05-25_220183e5c9541cb21a4aabb39f78928a_cryptolocker.exe	28
PID 2556 wrote to memory of 2604	2556	2024-05-25_220183e5c9541cb21a4aabb39f78928a_cryptolocker.exe	28
PID 2556 wrote to memory of 2604	2556	2024-05-25_220183e5c9541cb21a4aabb39f78928a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-25_220183e5c9541cb21a4aabb39f78928a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_220183e5c9541cb21a4aabb39f78928a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2604

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
70KB

MD5
fd826da775684d7212bcf936594ffa54

SHA1
b48a1640d9fce2ced2036a28cba78428e57f86b4

SHA256
0c071d31a15cfe339ca4400d7a7c51b952ea6e9fff1f24fb61dc5df95e4ef3e7

SHA512
a24e62a0909131bde1c47f34473cbccfdde2b17a957a569ac73228fdbc0ba3543b7c27a153a186edc667f12d9825509aa1b03298db0a91b81738b3aaeb6c0857

Download Submit
memory/2556-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2556-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2556-3-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2556-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2556-13-0x0000000002840000-0x0000000002850000-memory.dmp

Filesize
64KB

Download
memory/2556-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2604-19-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2604-26-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2604-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download