dde57154d3a7d86ec53d77e8de18c7b82d9bcdb5c2cc9685911ac574e420f344

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12/10/2024, 07:40

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General

Target

2024-10-12_49866dd9c6d69bc5fe349a40b806c0c0_cryptolocker.exe
Size

52KB
MD5

49866dd9c6d69bc5fe349a40b806c0c0
SHA1

808c279de032a06d9819ac2464d44d213d9ecd8d
SHA256

dde57154d3a7d86ec53d77e8de18c7b82d9bcdb5c2cc9685911ac574e420f344
SHA512

99974c342134aec730adf4ba1f4a2c0881b0c5b136cbf34c4fff0bec280b387bc05c527a6e335c602e317a90b56a339fbfea5c8fb118b36505a68abf76a36079
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpP+y:b7/y28wZEjbnouy8G76iH/NLpr

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2780	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2736	2024-10-12_49866dd9c6d69bc5fe349a40b806c0c0_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2736-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000a00000001227e-15.dat	upx
behavioral1/memory/2780-16-0x0000000000400000-0x000000000040E000-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	2024-10-12_49866dd9c6d69bc5fe349a40b806c0c0_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2736	2024-10-12_49866dd9c6d69bc5fe349a40b806c0c0_cryptolocker.exe
2780	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 2780	2736	2024-10-12_49866dd9c6d69bc5fe349a40b806c0c0_cryptolocker.exe	30
PID 2736 wrote to memory of 2780	2736	2024-10-12_49866dd9c6d69bc5fe349a40b806c0c0_cryptolocker.exe	30
PID 2736 wrote to memory of 2780	2736	2024-10-12_49866dd9c6d69bc5fe349a40b806c0c0_cryptolocker.exe	30
PID 2736 wrote to memory of 2780	2736	2024-10-12_49866dd9c6d69bc5fe349a40b806c0c0_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-12_49866dd9c6d69bc5fe349a40b806c0c0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_49866dd9c6d69bc5fe349a40b806c0c0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2736
- 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:2780

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

Replay Monitor

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Downloads

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

Filesize
52KB

MD5
8d7a982d6f9012d17388389f2a1aac69

SHA1
978ec849ed9b93112a0b3b7e1c0be545aadeee97

SHA256
dd17375c1d0a01eea98845543d224d4f52ae61acbd6e70181e29bd431d25dd4f

SHA512
f946914ee9bed2f3104b176346437f662b9f8c072d8139fe7fc249d1b0449aac81e5b2a0d79c8c2c52c176e6572cc988d9cdd402135a0a95f972c49d1766cc8f

Download Submit
memory/2736-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2736-9-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2736-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2736-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2780-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2780-25-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download