2ad43e33b631711d14550be989282ec5d0e09f0e903c2fbf5353c51977fedea8

Analysis

max time kernel
145s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
31-10-2023 15:42

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General

Target

NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe
Size

39KB
MD5

fd2000fed9e82e9bf455c69b5817d313
SHA1

6b102736798e6602faf6272fa531597a185c3444
SHA256

2ad43e33b631711d14550be989282ec5d0e09f0e903c2fbf5353c51977fedea8
SHA512

e8bf85e2fc1da456f623c5132967775b168d2ff678cb19ac1a1048e0f2770ee5439d2062008ba0fc0dbfa45315e786e8990113d1fab44daa52773946ba185df0
SSDEEP

768:b7o/2n1TCraU6GD1a4Xcn62TUdcuQlqJ51mwz:bc/y2lm6Y0AqJ51mwz

Score

7^/10

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-1-5-21-3350690463-3549324357-1323838019-1000\Control Panel\International\Geo\Nation	NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
1368	rewok.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 1368	2872	NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe	89
PID 2872 wrote to memory of 1368	2872	NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe	89
PID 2872 wrote to memory of 1368	2872	NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe	89

C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1368

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
40KB

MD5
0c3b3c446b9ecb8f201996863236d2c6

SHA1
e7a5dd97f01816491512f8b283ab57141b5fc49a

SHA256
cbdb7dc203a162ede7d4b8e7ae85f56bc7bbc1181b87f1d366c98f9675345d0c

SHA512
f52af1219058262cda93df7c482e64bf592a534948cbac6c5913ddc789ec1cbf87584bac6f5e65c7dcb56974ab73f25f597ffa95b21c5dd69c837f1deefedc3d

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

Filesize
40KB

MD5
0c3b3c446b9ecb8f201996863236d2c6

SHA1
e7a5dd97f01816491512f8b283ab57141b5fc49a

SHA256
cbdb7dc203a162ede7d4b8e7ae85f56bc7bbc1181b87f1d366c98f9675345d0c

SHA512
f52af1219058262cda93df7c482e64bf592a534948cbac6c5913ddc789ec1cbf87584bac6f5e65c7dcb56974ab73f25f597ffa95b21c5dd69c837f1deefedc3d

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

Filesize
40KB

MD5
0c3b3c446b9ecb8f201996863236d2c6

SHA1
e7a5dd97f01816491512f8b283ab57141b5fc49a

SHA256
cbdb7dc203a162ede7d4b8e7ae85f56bc7bbc1181b87f1d366c98f9675345d0c

SHA512
f52af1219058262cda93df7c482e64bf592a534948cbac6c5913ddc789ec1cbf87584bac6f5e65c7dcb56974ab73f25f597ffa95b21c5dd69c837f1deefedc3d

Download Submit
memory/1368-20-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/2872-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2872-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2872-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download