a891c9d79bcc0ee1399d9b2dc7e94c3acd7cda16440884f2cb82d1a668e49e08

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
05/06/2024, 22:22

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General

Target

2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe
Size

40KB
MD5

543464aa8a0a6053a963586836da668e
SHA1

dcfd97b667bf7f97257f26bf47a1fd9f140ba79d
SHA256

a891c9d79bcc0ee1399d9b2dc7e94c3acd7cda16440884f2cb82d1a668e49e08
SHA512

6363200ba4cab21913d929f0776fa4069f337280f50c956913f042ffe359dedd052e50f729cecfc321287a3a608da90b83f751916cf53afbe437eb5ec11c9225
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYan8R:qDdFJy3QMOtEvwDpjjWMl7Tdn8R

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000f000000012028-11.dat	CryptoLocker_rule2
behavioral1/memory/2108-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2796-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000f000000012028-11.dat	CryptoLocker_set1
behavioral1/memory/2108-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2796-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000f000000012028-11.dat	UPX
behavioral1/memory/2108-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2796-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2796	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2108	2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000f000000012028-11.dat	upx
behavioral1/memory/2108-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2796-26-0x0000000000500000-0x0000000000510000-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 2108 wrote to memory of 2796	2108	2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe	29
PID 2108 wrote to memory of 2796	2108	2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe	29
PID 2108 wrote to memory of 2796	2108	2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe	29
PID 2108 wrote to memory of 2796	2108	2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2796

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
40KB

MD5
c708e4254cbb785f8b2b5396194252eb

SHA1
9fd7a62bf3f35089588703f47b9668644bd52358

SHA256
3d3a5e08bcb9783c29c0ca9447bafe30d19cdabbb757e4eee5242242f5e8ed20

SHA512
6971b0b7e34d08e0a46857053068692481c8ffe5b811bb5f7573f8851d6d556106b42d30e250badbec1b2b6161630728a5eb82bb0ee4e31ce6ff37521ea7e0f8

Download Submit
memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2108-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2108-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2108-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2108-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2796-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2796-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2796-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download