6faef10ee46b82c2b48add8311e3cf8e93521ff175cd53f2023914171d4f8f4f

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
12/10/2024, 06:46

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General

Target

2024-10-12_a0a0b941a45ffa57cc990b6db49621e3_cryptolocker.exe
Size

55KB
MD5

a0a0b941a45ffa57cc990b6db49621e3
SHA1

c14c52a299edbfa5a728a723ab4f6da924b41cfd
SHA256

6faef10ee46b82c2b48add8311e3cf8e93521ff175cd53f2023914171d4f8f4f
SHA512

c3bbb5ccd0a6847b394f24a996728dd7ad193d4747630cba9c7705b1eb09f1ec47bbb672135faeadafaa6e2e060fddda5c1c5430c2b27dd3105c46aeb1646471
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFPY:b7/y28wZEjbnouy8G76iH/NLpe

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3008	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2760	2024-10-12_a0a0b941a45ffa57cc990b6db49621e3_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2760-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000800000001227e-14.dat	upx
behavioral1/memory/3008-16-0x0000000000400000-0x000000000040E000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-12_a0a0b941a45ffa57cc990b6db49621e3_cryptolocker.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2760	2024-10-12_a0a0b941a45ffa57cc990b6db49621e3_cryptolocker.exe
3008	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 3008	2760	2024-10-12_a0a0b941a45ffa57cc990b6db49621e3_cryptolocker.exe	30
PID 2760 wrote to memory of 3008	2760	2024-10-12_a0a0b941a45ffa57cc990b6db49621e3_cryptolocker.exe	30
PID 2760 wrote to memory of 3008	2760	2024-10-12_a0a0b941a45ffa57cc990b6db49621e3_cryptolocker.exe	30
PID 2760 wrote to memory of 3008	2760	2024-10-12_a0a0b941a45ffa57cc990b6db49621e3_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-12_a0a0b941a45ffa57cc990b6db49621e3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_a0a0b941a45ffa57cc990b6db49621e3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  PID:3008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
55KB

MD5
d8ab4e429ad965d13cf999a9a5fd79de

SHA1
3c06e44c46423b4ae0c5fe37d4579a877e89dd18

SHA256
8d9c0f8a32b1ba04ff57c0a179753c90b8c3cc8a841d787e3139128894db896e

SHA512
627cf5fc57e42255f34fca0bd1c63adc7a3f746c1e8be44a30dada40eafacc68a1ee2415ef5aaa77d91cda7988812d7da204f4a251bc2ac8e7bcc00bd1505378

Download Submit
memory/2760-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2760-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2760-9-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2760-1-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/3008-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download