859cc93d1d08aff377460c46f94ea60fe86000c9d9a3e746697a94e4a5a8e866

Analysis

max time kernel
148s
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
06/09/2024, 21:23

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General

Target

2024-09-06_968f1dc5d019d63795aa84abaf528eec_cryptolocker.exe
Size

33KB
MD5

968f1dc5d019d63795aa84abaf528eec
SHA1

d6b4bb655085d6e338836d1721d6f1e1000db813
SHA256

859cc93d1d08aff377460c46f94ea60fe86000c9d9a3e746697a94e4a5a8e866
SHA512

d59aaeb1e4c1ac17f19fd54010b860a4c3e323936cca95c43efd34d604ca7442b0e69d314ff990fd2e26136097ace8a3949d03653c1af88189564172306eac22
SSDEEP

768:bROjawZEjbhxnbcuyD7U9kXfn62tH/1/LpP+Q:bRO2wZEjbnouy8Gv6iH/NLpF

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	2024-09-06_968f1dc5d019d63795aa84abaf528eec_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1896	rewok.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2540-0-0x0000000000400000-0x000000000040D000-memory.dmp	upx
behavioral2/files/0x00090000000233c7-13.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	2024-09-06_968f1dc5d019d63795aa84abaf528eec_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 2540 wrote to memory of 1896	2540	2024-09-06_968f1dc5d019d63795aa84abaf528eec_cryptolocker.exe	84
PID 2540 wrote to memory of 1896	2540	2024-09-06_968f1dc5d019d63795aa84abaf528eec_cryptolocker.exe	84
PID 2540 wrote to memory of 1896	2540	2024-09-06_968f1dc5d019d63795aa84abaf528eec_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-06_968f1dc5d019d63795aa84abaf528eec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-06_968f1dc5d019d63795aa84abaf528eec_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2540
- 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:1896

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

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Downloads

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

Filesize
34KB

MD5
c0384017b2029f99ff055ebac9f1baae

SHA1
4e744e2ceba4db5fa3d165bcf3f5507001599b74

SHA256
1077c094f3b3239fe002533db632a25ccdc714e9c78e3e7d0d06608d01d4b539

SHA512
2de0e8a669c952ac2faf14837ab59b104c1e3c879ea8d878c1a28cac66f765052d3261b1d9012a3ba81e1ae6286fab418115f5cf7de5376308f7a339ed90f850

Download Submit
memory/1896-25-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/2540-0-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2540-1-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/2540-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2540-2-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download