77501e1668e9f57e3efa6286a4108205b34951f14cdcc33dc66462ed263c444e

Analysis

max time kernel
149s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21/11/2024, 06:48

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General

Target

2024-11-21_60a44144da287649449dc1f8dd31413a_cryptolocker.exe
Size

52KB
MD5

60a44144da287649449dc1f8dd31413a
SHA1

1b493cb52e273ec41976aad80e77955ffcec87fa
SHA256

77501e1668e9f57e3efa6286a4108205b34951f14cdcc33dc66462ed263c444e
SHA512

e9bc1285aefe0ee5306ad0fe79459a586948ec9c7df351f15fdc22fba66a858915dcb2f1603a2fb72428b5146f4f48192ded170d00fea09431692a27e054895b
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpP+gy:b7/y28wZEjbnouy8G76iH/NLpfy

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2024-11-21_60a44144da287649449dc1f8dd31413a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2416	rewok.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1164-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x000a000000023c25-13.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	rewok.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-21_60a44144da287649449dc1f8dd31413a_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1164 wrote to memory of 2416	1164	2024-11-21_60a44144da287649449dc1f8dd31413a_cryptolocker.exe	82
PID 1164 wrote to memory of 2416	1164	2024-11-21_60a44144da287649449dc1f8dd31413a_cryptolocker.exe	82
PID 1164 wrote to memory of 2416	1164	2024-11-21_60a44144da287649449dc1f8dd31413a_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-11-21_60a44144da287649449dc1f8dd31413a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-21_60a44144da287649449dc1f8dd31413a_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1164
- 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:2416

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
52KB

MD5
de452d502cc932ae0202cd1218c7f251

SHA1
fb806fb940057e4d112bd81491945c8942657aac

SHA256
5e0a6d1c88162e1c1621a135f365ad7cdede46227b28b18b04253dcc5a518b73

SHA512
638f30ce0934dbfd5c665e8aed6a67c83e15ca4daf6e357fd2056ec46eeeb6118967a2fc1e173002efb9b19796196928b47729187ee488e478efcee4f8a8bd13

Download Submit
memory/1164-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1164-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1164-2-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1164-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2416-26-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download