8fa63781c309794691a2167a505da478f8ac7c736fddc43424a8779c38f895d8

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
17/05/2024, 13:26

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General

Target

2024-05-17_4c1dfffb1582f3f8256f114158eb113e_cryptolocker.exe
Size

57KB
MD5

4c1dfffb1582f3f8256f114158eb113e
SHA1

40a69f3b34b78981af4ecaf1c0e5db3fe891c7de
SHA256

8fa63781c309794691a2167a505da478f8ac7c736fddc43424a8779c38f895d8
SHA512

83a7c91b7d1166a61da2b4ded63be0b3950440a143bec66cb1480ce289ac044bcf5a60766e21d3cd863ca3d9da81d819ab6a351a238b3547fe82272a70677f6e
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6Impyb:BbdDmjr+OtEvwDpjMY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1700-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001226d-11.dat	CryptoLocker_rule2
behavioral1/memory/1700-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2576-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/1700-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2576-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1700-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001226d-11.dat	UPX
behavioral1/memory/1700-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2576-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2576	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1700	2024-05-17_4c1dfffb1582f3f8256f114158eb113e_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 1700 wrote to memory of 2576	1700	2024-05-17_4c1dfffb1582f3f8256f114158eb113e_cryptolocker.exe	28
PID 1700 wrote to memory of 2576	1700	2024-05-17_4c1dfffb1582f3f8256f114158eb113e_cryptolocker.exe	28
PID 1700 wrote to memory of 2576	1700	2024-05-17_4c1dfffb1582f3f8256f114158eb113e_cryptolocker.exe	28
PID 1700 wrote to memory of 2576	1700	2024-05-17_4c1dfffb1582f3f8256f114158eb113e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-17_4c1dfffb1582f3f8256f114158eb113e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-17_4c1dfffb1582f3f8256f114158eb113e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2576

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
57KB

MD5
b9da19c13ec8bd5d880274fda0454da9

SHA1
a8c4b3234e9381ca0bc69815c56bc0a64233994f

SHA256
b5942762b0bc60afaf2c96c312d285313acc32e963864e3fe41ff24a5ebd4fb2

SHA512
e0336e356a2e3656c95f72393d90e87332515548930bd5f8a5ec5e6bffcf28a77de03ad627c034e95ec92bcb83a744fe116e8965ed3c9990205bc13375b58acf

Download Submit
memory/1700-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1700-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1700-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1700-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1700-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2576-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2576-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2576-18-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download