3b6d0c79740beb135a9952187a9998f32371d5e78972d6e4ffbdfda151a2f3bf

Analysis

max time kernel
142s
max time network
147s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
20/02/2024, 02:44

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General

Target

2024-02-20_6dc973a7eca657ac6c6ae9a65786550f_cryptolocker.exe
Size

31KB
MD5

6dc973a7eca657ac6c6ae9a65786550f
SHA1

3e7bf5c6be3c216823a7cb031409590d36961223
SHA256

3b6d0c79740beb135a9952187a9998f32371d5e78972d6e4ffbdfda151a2f3bf
SHA512

2acf2db65dfeb4fe47d3254ae837c11815e502f2430477f98c24d5a1763cf7e7267ccc7b40366a636e9bd979867caa2f2d1badccc35955fdb98f90f2cec93e34
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+4tHH:q0zizzOSxMOtEvwDpj/arqn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012243-11.dat	CryptoLocker_rule2
behavioral1/memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2072-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2072-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2072-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2072-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012243-11.dat	UPX
behavioral1/memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2072-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2072-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2072	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2432	2024-02-20_6dc973a7eca657ac6c6ae9a65786550f_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 2432 wrote to memory of 2072	2432	2024-02-20_6dc973a7eca657ac6c6ae9a65786550f_cryptolocker.exe	28
PID 2432 wrote to memory of 2072	2432	2024-02-20_6dc973a7eca657ac6c6ae9a65786550f_cryptolocker.exe	28
PID 2432 wrote to memory of 2072	2432	2024-02-20_6dc973a7eca657ac6c6ae9a65786550f_cryptolocker.exe	28
PID 2432 wrote to memory of 2072	2432	2024-02-20_6dc973a7eca657ac6c6ae9a65786550f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-20_6dc973a7eca657ac6c6ae9a65786550f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_6dc973a7eca657ac6c6ae9a65786550f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2072

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
31KB

MD5
d0b7a4df67b6836ba65eff4094ed5608

SHA1
64bff448bb47a448be835fca1a12f898ac2b1033

SHA256
eef0d0577054f67f9559d5121b84346b1dbd5b45be51835a035ddec98aac89d6

SHA512
48c2f866ca09d8e0280264590fdb58ae41d8ed5d0bb7b82c6b919d44cbc441c8e77a410cbcf391c07a5557bec7232436c7640b0554680748e585576bccfdbbc2

Download Submit
memory/2072-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2072-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2072-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2072-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2432-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2432-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2432-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download