c31d47f2a87ff37bbed99186e4c2c416ab3aab4bdc13d1ef6c8f0a66f1a078a8

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
24/05/2024, 03:33

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General

Target

2024-05-24_30102a51a5c61b8593d906cd38258842_cryptolocker.exe
Size

73KB
MD5

30102a51a5c61b8593d906cd38258842
SHA1

b03ec5db2db42892317434a9ce184a7f6462d1fc
SHA256

c31d47f2a87ff37bbed99186e4c2c416ab3aab4bdc13d1ef6c8f0a66f1a078a8
SHA512

ab35e9755a5d31a6381c97a6dafbd1c51bc4ba8f02aeb307c2ce805c69547a782f9b405c523371e308d0296449e229f00c5bd15614574f4db9d00aee96df00e1
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9Vo:C4Q2c94OtEvwDpj4H8zT

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2136-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012263-11.dat	CryptoLocker_rule2
behavioral1/memory/2944-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2136-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2944-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2136-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2136-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2944-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2136-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000012263-11.dat	UPX
behavioral1/memory/2944-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2136-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2944-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2944	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2136	2024-05-24_30102a51a5c61b8593d906cd38258842_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2136-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000012263-11.dat	upx
behavioral1/memory/2944-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2136-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2944-27-0x0000000000500000-0x0000000000510000-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 2136 wrote to memory of 2944	2136	2024-05-24_30102a51a5c61b8593d906cd38258842_cryptolocker.exe	29
PID 2136 wrote to memory of 2944	2136	2024-05-24_30102a51a5c61b8593d906cd38258842_cryptolocker.exe	29
PID 2136 wrote to memory of 2944	2136	2024-05-24_30102a51a5c61b8593d906cd38258842_cryptolocker.exe	29
PID 2136 wrote to memory of 2944	2136	2024-05-24_30102a51a5c61b8593d906cd38258842_cryptolocker.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-05-24_30102a51a5c61b8593d906cd38258842_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_30102a51a5c61b8593d906cd38258842_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2944

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
73KB

MD5
33bfc6ca2217e54531fd516071afe6bb

SHA1
36d7d3ebbf28d096fbd8d799bb578102dc91db8d

SHA256
9d08726441e73347322e6386fa7f169d51152ddca4bc45ff547f047e401bf01f

SHA512
a51e6e0401e4c0d28455621f7ce927dd25996960e448f7658755e7f1dda3f3c05e66438e5b196e683183cb02baae5f4b5cc59d10851c512888345562b2546322

Download Submit
memory/2136-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2136-9-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2136-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2136-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2136-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2944-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2944-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2944-26-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2944-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download