089067714ca03faff684a9ef1a418e031c86161b4f095648f845a70ce03733fe

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25/04/2024, 18:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-25_dcf2c9e4b00986e50b8e1666063604c8_cryptolocker.exe
Size

67KB
MD5

dcf2c9e4b00986e50b8e1666063604c8
SHA1

3dfd3d29cb52b2249c25186cfc207b3e1b2dc574
SHA256

089067714ca03faff684a9ef1a418e031c86161b4f095648f845a70ce03733fe
SHA512

28591304028f00d11a751e2fbe85f3c3e1315341891a613c74d9b0bef905d7409494878c9764139e10813f04db519d8b47b199d512bfee68f5682f801b6b8e26
SSDEEP

768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1Px:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAx

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1964-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001220d-11.dat	CryptoLocker_rule2
behavioral1/memory/1964-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2628-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2628-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1964-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a00000001220d-11.dat	CryptoLocker_set1
behavioral1/memory/1964-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2628-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2628-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1964-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000a00000001220d-11.dat	UPX
behavioral1/memory/1964-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2628-18-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2628-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2628	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1964	2024-04-25_dcf2c9e4b00986e50b8e1666063604c8_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1964-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000a00000001220d-11.dat	upx
behavioral1/memory/1964-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2628-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2628-27-0x0000000000500000-0x000000000050F000-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 1964 wrote to memory of 2628	1964	2024-04-25_dcf2c9e4b00986e50b8e1666063604c8_cryptolocker.exe	28
PID 1964 wrote to memory of 2628	1964	2024-04-25_dcf2c9e4b00986e50b8e1666063604c8_cryptolocker.exe	28
PID 1964 wrote to memory of 2628	1964	2024-04-25_dcf2c9e4b00986e50b8e1666063604c8_cryptolocker.exe	28
PID 1964 wrote to memory of 2628	1964	2024-04-25_dcf2c9e4b00986e50b8e1666063604c8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-25_dcf2c9e4b00986e50b8e1666063604c8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_dcf2c9e4b00986e50b8e1666063604c8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2628

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

Loading Replay Monitor...

Downloads

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

Filesize
67KB

MD5
45f8663a6be33c544d16a6054e6dc4a2

SHA1
f9af44034d3a7b6ee11bc4b9facc3bd987d2f47e

SHA256
3f74febe56a36d7645dfe0cc0f13d1170f292872a81aa8431e84ada208aca576

SHA512
364f84564e03c0a1840f65fa5f640420e5ca396332720c531a1a1dfc61b2e07c4c773749cbeb8c7628cfee5b3dae40d4cd5da9ef30c1501c96aac17cbf11eff8

Download Submit
memory/1964-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1964-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1964-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1964-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1964-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1964-16-0x00000000006E0000-0x00000000006EF000-memory.dmp

Filesize
60KB

Download
memory/2628-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2628-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2628-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2628-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download