9c396fae99cb452cd3f7510d6899a6b25c08ee6cbd227de00a9f9c3c37228dce

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
07/05/2024, 04:27

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General

Target

2024-05-07_2b99f68d2c98486b9ad788fd75d433d2_cryptolocker.exe
Size

38KB
MD5

2b99f68d2c98486b9ad788fd75d433d2
SHA1

04dc7081c6639e8d637870643f017690934ab974
SHA256

9c396fae99cb452cd3f7510d6899a6b25c08ee6cbd227de00a9f9c3c37228dce
SHA512

40454063a422671d1cd87833374c1f321711e87a7da954812cfe7fe467f8a1ba255a666908fee81bb892a45fb609190395b6cb7bb4b04a5c676388b4205bc867
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYfFM:qDdFJy3QMOtEvwDpjjWMl7Tj

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1108-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000014b31-11.dat	CryptoLocker_rule2
behavioral1/memory/1108-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3040-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1108-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000014b31-11.dat	CryptoLocker_set1
behavioral1/memory/1108-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3040-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1108-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000014b31-11.dat	UPX
behavioral1/memory/1108-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3040-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3040	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1108	2024-05-07_2b99f68d2c98486b9ad788fd75d433d2_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1108-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000014b31-11.dat	upx
behavioral1/memory/1108-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3040-26-0x0000000000500000-0x0000000000510000-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 1108 wrote to memory of 3040	1108	2024-05-07_2b99f68d2c98486b9ad788fd75d433d2_cryptolocker.exe	28
PID 1108 wrote to memory of 3040	1108	2024-05-07_2b99f68d2c98486b9ad788fd75d433d2_cryptolocker.exe	28
PID 1108 wrote to memory of 3040	1108	2024-05-07_2b99f68d2c98486b9ad788fd75d433d2_cryptolocker.exe	28
PID 1108 wrote to memory of 3040	1108	2024-05-07_2b99f68d2c98486b9ad788fd75d433d2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-07_2b99f68d2c98486b9ad788fd75d433d2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-07_2b99f68d2c98486b9ad788fd75d433d2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3040

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
39KB

MD5
508487c37bcc5b7c1e654045e031215c

SHA1
e5fa92bdea87d21b6048aed6c71cd1f2170c5d03

SHA256
658755ebb33d924bf76279a5efb5bb6d46234c9a4fbbe852f5e9306b1cfb3c83

SHA512
9723ce711f83072a573d0796d26e07fde70fce3f9456279ec1f18dfb0ab5bb3ab12866766e7c36876211d69022a1ba98b0e6ddc71fa3f13a859945e0b775ce53

Download Submit
memory/1108-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1108-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1108-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/1108-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1108-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3040-18-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/3040-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3040-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download