5a96a8532e438520585af48a3556508d8749deb013edcc8e619f6d2b0811b3f2

Analysis

max time kernel
142s
max time network
143s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 08:52

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General

Target

2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe
Size

46KB
MD5

c5db8b49a28cfda9d8c86c54104e1e89
SHA1

01814312a96ffe0e53b191ab4f922ad1e0842e1f
SHA256

5a96a8532e438520585af48a3556508d8749deb013edcc8e619f6d2b0811b3f2
SHA512

3fac67df0e6a93989bdb5777e128cac4504973c7e8e6c61dd5dc527dc026bc2721b83d319762a532d6a993fceef87eb6374f870db7230a2cad8b59d9108e6022
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoN:qmbhXDmjr5MOtEvwDpj5cDtKkQZQT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1988-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012238-11.dat	CryptoLocker_rule2
behavioral1/memory/1988-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2272-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1988-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2272-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1988-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012238-11.dat	UPX
behavioral1/memory/1988-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2272-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2272	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1988	2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_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 1988 wrote to memory of 2272	1988	2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe	28
PID 1988 wrote to memory of 2272	1988	2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe	28
PID 1988 wrote to memory of 2272	1988	2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe	28
PID 1988 wrote to memory of 2272	1988	2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2272

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
47KB

MD5
906777c3ae952d17c42680ec2d16312a

SHA1
ec537f605fdeac93ef9496e520edebbc8ae22a89

SHA256
9c3527488723a5a84ec636f0f91e5ffa6198a5394524630f1e2b94b1dfa11f39

SHA512
97f9435255b08a2a700d988d1b3e66509e14d5e84d652076b6efe1b40e25ca2d6fd449df1a39ffb354c955de6e497b59d80638b334118287be5ce31a62218c57

Download Submit
memory/1988-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1988-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1988-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1988-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1988-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2272-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2272-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2272-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download