18b33d3d4351adb75415e8e722ad14358333b4cf0de1d2ace53524b8e232b3b2

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
08/06/2024, 23:31

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General

Target

2024-06-08_b95533c1bede604f8df9e48e96a04812_cryptolocker.exe
Size

65KB
MD5

b95533c1bede604f8df9e48e96a04812
SHA1

33b2b6a9f851a6f6d79b81cab28af14b6e4f6d49
SHA256

18b33d3d4351adb75415e8e722ad14358333b4cf0de1d2ace53524b8e232b3b2
SHA512

ecab842b7400655a89167f80c9f9ef7056c49c906192f8379b81455a360d62ac8d2898a22635ce9981a3f7e5ed68d2b46734f5bb06e6553f961a787b7f5e94d2
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsig:BbdDmjr+OtEvwDpjM85

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012280-11.dat	CryptoLocker_rule2
behavioral1/memory/836-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2356-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/836-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2356-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012280-11.dat	UPX
behavioral1/memory/836-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2356-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2356	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
836	2024-06-08_b95533c1bede604f8df9e48e96a04812_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 836 wrote to memory of 2356	836	2024-06-08_b95533c1bede604f8df9e48e96a04812_cryptolocker.exe	28
PID 836 wrote to memory of 2356	836	2024-06-08_b95533c1bede604f8df9e48e96a04812_cryptolocker.exe	28
PID 836 wrote to memory of 2356	836	2024-06-08_b95533c1bede604f8df9e48e96a04812_cryptolocker.exe	28
PID 836 wrote to memory of 2356	836	2024-06-08_b95533c1bede604f8df9e48e96a04812_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-08_b95533c1bede604f8df9e48e96a04812_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_b95533c1bede604f8df9e48e96a04812_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:836
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2356

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
65KB

MD5
edbbff039ba098da4dcd8b1cb10bf6de

SHA1
a78be51266f0d1c4ad88ba6405960e9e6890160e

SHA256
a450a9ff3c8701f4403bc361b15bce6cc32c20796ce6045b518c45532d15586a

SHA512
03bfbb095adea6f03a98e120c30db2e53b991437285e468b46c57e4864f53e25ee502cec37849f1f6f68e0faf993e2222ccabc9c07e1abb89f0ba62f3c62bd56

Download Submit
memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/836-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/836-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/836-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/836-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2356-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2356-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2356-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download