928476d931b09fb2ec850737fa0629c34f17772dab1064829d3f23ecd0ab40d0

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
02/09/2023, 19:20

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General

Target

2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe
Size

145KB
MD5

7295b5042553809b95f4f77b20d43025
SHA1

321faf04db74101ea632298abafbbeffb954e593
SHA256

928476d931b09fb2ec850737fa0629c34f17772dab1064829d3f23ecd0ab40d0
SHA512

282fe25758ec74c50db66fb5e53881f3c129d854ece76926fcdafc5dd3d837faa01df5520d110598819d64b88e7000d9217bb84e040073dc2014cd884de2861a
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjCGYQbN/PKwNgp699GNtL1eex:T6a+rdOOtEvwDpjLz4

Score

7^/10

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-1-5-21-528036852-1341495193-1175965888-1000\Control Panel\International\Geo\Nation	2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
2220	asih.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4464-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023218-13.dat	upx
behavioral2/files/0x0008000000023218-15.dat	upx
behavioral2/memory/2220-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4464-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023218-16.dat	upx
behavioral2/memory/2220-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 4464 wrote to memory of 2220	4464	2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe	85
PID 4464 wrote to memory of 2220	4464	2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe	85
PID 4464 wrote to memory of 2220	4464	2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe	85

C:\Users\Admin\AppData\Local\Temp\2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4464
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2220

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\asih.exe

Filesize
145KB

MD5
4eec5e9ef65779b3aefb570c1c73beee

SHA1
a2ab3cd7dd74729606802d15c907c833a81a9347

SHA256
662a063ab241a7c86b4faa317ca88b92aaf1e9ee8b7f9bffff2ade3e18496ae5

SHA512
699642be08cbad92b66518d6bca55a60c1221a35f15e1ebbb3babbd889f14ba45985ead956828529219fd2d869dce897ec17971a8c7004e1a59b9a7bfaabef65

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

Filesize
145KB

MD5
4eec5e9ef65779b3aefb570c1c73beee

SHA1
a2ab3cd7dd74729606802d15c907c833a81a9347

SHA256
662a063ab241a7c86b4faa317ca88b92aaf1e9ee8b7f9bffff2ade3e18496ae5

SHA512
699642be08cbad92b66518d6bca55a60c1221a35f15e1ebbb3babbd889f14ba45985ead956828529219fd2d869dce897ec17971a8c7004e1a59b9a7bfaabef65

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

Filesize
145KB

MD5
4eec5e9ef65779b3aefb570c1c73beee

SHA1
a2ab3cd7dd74729606802d15c907c833a81a9347

SHA256
662a063ab241a7c86b4faa317ca88b92aaf1e9ee8b7f9bffff2ade3e18496ae5

SHA512
699642be08cbad92b66518d6bca55a60c1221a35f15e1ebbb3babbd889f14ba45985ead956828529219fd2d869dce897ec17971a8c7004e1a59b9a7bfaabef65

Download Submit
memory/2220-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2220-21-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2220-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4464-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4464-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4464-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4464-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4464-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download