264c74e0a84130f9990cd5f794fb323f630f2f761d87dc510d22e79203f37da7

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26/04/2024, 04:44

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General

Target

2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe
Size

48KB
MD5

635a4b7a6522727705bc276265093af1
SHA1

40fc9e87e5eb3780eff14325426a7c02c0484719
SHA256

264c74e0a84130f9990cd5f794fb323f630f2f761d87dc510d22e79203f37da7
SHA512

3c4ceced6c5de789c9277f360298d38e0fe161e863fe2b6dcccafeed4352857a0eb1f92dfe52d42aa4b3a054737b4ba2f60380b00fa45cb31752ec07cb5570fe
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mo2pK:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000014466-11.dat	CryptoLocker_rule2
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d000000014466-11.dat	UPX
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2548	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1760	2024-04-26_635a4b7a6522727705bc276265093af1_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 1760 wrote to memory of 2548	1760	2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe	28
PID 1760 wrote to memory of 2548	1760	2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe	28
PID 1760 wrote to memory of 2548	1760	2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe	28
PID 1760 wrote to memory of 2548	1760	2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2548

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

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
48KB

MD5
0235785a191deb10e28272770a75aaa1

SHA1
298bd71d52edcbafda19aa526e45eb7f0d089875

SHA256
8a381ed729e8a79483160f5c66b60fe775ae772b9cbd9667a4ca8034c21f4bf2

SHA512
6acdee5a80795fef83e93e29a6ea7dcea384aba37ad21a312fb2d6ddc232cb50ddc4e3993b645b141aa781217d96df46c81086e50d3804646893573bb76c7f7e

Download Submit
memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1760-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1760-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/1760-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-18-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2548-19-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download