2a0c93ca6ecbc7b293c8e00a40af49969895de8ee4d03f12ce1c26a5016c382b

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 03:43

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General

Target

2024-09-19_df60faad67fe7e071c342042e05d5bf3_cryptolocker.exe
Size

54KB
MD5

df60faad67fe7e071c342042e05d5bf3
SHA1

7687fb479da7972be9be2ea51ac1e9ed05485625
SHA256

2a0c93ca6ecbc7b293c8e00a40af49969895de8ee4d03f12ce1c26a5016c382b
SHA512

d2a681b2c01c0884ffff9186510f6e16f1028a9f7d3a63b18b92f99897be2d5ebd4e7936d520c27c24593c99d9d95efcabd5d27b4f3a98b098e09cc28b512904
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFP0:b7/y28wZEjbnouy8G76iH/NLp6

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	2024-09-19_df60faad67fe7e071c342042e05d5bf3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4696	rewok.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4616-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x000a000000023438-13.dat	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	2024-09-19_df60faad67fe7e071c342042e05d5bf3_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 4696	4616	2024-09-19_df60faad67fe7e071c342042e05d5bf3_cryptolocker.exe	82
PID 4616 wrote to memory of 4696	4616	2024-09-19_df60faad67fe7e071c342042e05d5bf3_cryptolocker.exe	82
PID 4616 wrote to memory of 4696	4616	2024-09-19_df60faad67fe7e071c342042e05d5bf3_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_df60faad67fe7e071c342042e05d5bf3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_df60faad67fe7e071c342042e05d5bf3_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4616
- 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
  PID:4696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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
54KB

MD5
de7da1d2f5a1e2ff5de74b224d88ddf9

SHA1
2151fe89b10cff9bdf5a7bbefe9921ae91200a3e

SHA256
8faea77b7ac16a3783666d4d327c233b767d8a5de9287a6d1a3ec4e727176259

SHA512
d6c722123da20c966243b2735cb0fbd6d6ed045002e4697943eed68094da3c9672156f2d09b8cf420be08d539bfa2b546f2e0cd3299fc7a4e6e31e5601d8e66d

Download Submit
memory/4616-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4616-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4616-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4616-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4696-20-0x0000000002D50000-0x0000000002D56000-memory.dmp

Filesize
24KB

Download