a1ca093ece2d62a81666a0532ef3d7af92fbd9431ec40723f53163db2932806e

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2024, 04:13

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General

Target

2024-10-01_ec5d319d94e1e9f29b6c5bb136f8521e_cryptolocker.exe
Size

35KB
MD5

ec5d319d94e1e9f29b6c5bb136f8521e
SHA1

7beb709be3cdac11f17cf3c6b22481cbd649abaf
SHA256

a1ca093ece2d62a81666a0532ef3d7af92fbd9431ec40723f53163db2932806e
SHA512

b61c2428695a79005f44ab119aee48757799bb810353852729339d7a50fb117d39075030e0dedf7096cda96e37bcbc8f7e52bf6f2e58817423970fa3ef489067
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgYKvld4:b/yC4GyNM01GuQMNXw2PSjSKkcJYKvlu

Score

7^/10

discovery

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2024-10-01_ec5d319d94e1e9f29b6c5bb136f8521e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3488	retln.exe

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	2024-10-01_ec5d319d94e1e9f29b6c5bb136f8521e_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 216 wrote to memory of 3488	216	2024-10-01_ec5d319d94e1e9f29b6c5bb136f8521e_cryptolocker.exe	82
PID 216 wrote to memory of 3488	216	2024-10-01_ec5d319d94e1e9f29b6c5bb136f8521e_cryptolocker.exe	82
PID 216 wrote to memory of 3488	216	2024-10-01_ec5d319d94e1e9f29b6c5bb136f8521e_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-10-01_ec5d319d94e1e9f29b6c5bb136f8521e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-01_ec5d319d94e1e9f29b6c5bb136f8521e_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:216
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3488

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\retln.exe

Filesize
35KB

MD5
6ac28b99bdb7735a14ecd8ac63f49f8d

SHA1
d996ba9e14e22ce837dd487f131d4b80ca1479da

SHA256
894c9e9b4295f5e2c0967b83e3c4ced66fe1566ff2070f166c5a079d723bbde6

SHA512
04b9bac1e824c5df6813aab2239c1f50a0683c4c1464c4d341c13e98c18ff15ccb767ca57968b190b371356f1b6dcdd81b7fcf198e49f3b5e277ebfb9c37bfaa

Download Submit
memory/216-0-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/216-1-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/216-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3488-25-0x0000000002D50000-0x0000000002D56000-memory.dmp

Filesize
24KB

Download