e6a943dbfe3f0ee894d29bdac3bc33bbf173992ad8e2d31705c81551e5cdbf26

Analysis

max time kernel
159s
max time network
171s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
11/10/2023, 13:28

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General

Target

2023-08-26_838c47c4270d397da107abbb2d97c146_cryptolocker_JC.exe
Size

81KB
MD5

838c47c4270d397da107abbb2d97c146
SHA1

73b9ba4c91196df8bfc24dc933195894dfa5f38f
SHA256

e6a943dbfe3f0ee894d29bdac3bc33bbf173992ad8e2d31705c81551e5cdbf26
SHA512

0f2a8d62f5c671bcc755c00df6f92de692fcf99291edd02ed86d7b010945f74873aa2e31d03566979477bb9f92c3d73c91c10c7d7a35bbd05ae1ad2341038dd0
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIS:qkmnpomddpMOtEvwDpjJGYQbN/PKwMS

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-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	2023-08-26_838c47c4270d397da107abbb2d97c146_cryptolocker_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
2228	asih.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4500-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4500-1-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4500-4-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000700000002308e-18.dat	upx
behavioral2/files/0x000700000002308e-20.dat	upx
behavioral2/files/0x000700000002308e-21.dat	upx
behavioral2/memory/2228-30-0x0000000000500000-0x000000000050F000-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 4500 wrote to memory of 2228	4500	2023-08-26_838c47c4270d397da107abbb2d97c146_cryptolocker_JC.exe	91
PID 4500 wrote to memory of 2228	4500	2023-08-26_838c47c4270d397da107abbb2d97c146_cryptolocker_JC.exe	91
PID 4500 wrote to memory of 2228	4500	2023-08-26_838c47c4270d397da107abbb2d97c146_cryptolocker_JC.exe	91

C:\Users\Admin\AppData\Local\Temp\2023-08-26_838c47c4270d397da107abbb2d97c146_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-26_838c47c4270d397da107abbb2d97c146_cryptolocker_JC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4500
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2228

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
81KB

MD5
1f8ab829c132f524e570aa271617b33e

SHA1
5dfe71e035dec857a45d26232d84b31b68615a24

SHA256
faa52d034b3c01b50672c5145f636afe15542a7f6abd5c5b67645d8be22d5aa4

SHA512
716a50674c8d8ea59686c788ca0c17c88c0bc798ded3862b08b5e112a5041e7a9e2ef91e13de72096f445291c2d8db6a5698011877420ae9d87cb76bf0e5f9c8

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

Filesize
81KB

MD5
1f8ab829c132f524e570aa271617b33e

SHA1
5dfe71e035dec857a45d26232d84b31b68615a24

SHA256
faa52d034b3c01b50672c5145f636afe15542a7f6abd5c5b67645d8be22d5aa4

SHA512
716a50674c8d8ea59686c788ca0c17c88c0bc798ded3862b08b5e112a5041e7a9e2ef91e13de72096f445291c2d8db6a5698011877420ae9d87cb76bf0e5f9c8

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

Filesize
81KB

MD5
1f8ab829c132f524e570aa271617b33e

SHA1
5dfe71e035dec857a45d26232d84b31b68615a24

SHA256
faa52d034b3c01b50672c5145f636afe15542a7f6abd5c5b67645d8be22d5aa4

SHA512
716a50674c8d8ea59686c788ca0c17c88c0bc798ded3862b08b5e112a5041e7a9e2ef91e13de72096f445291c2d8db6a5698011877420ae9d87cb76bf0e5f9c8

Download Submit
memory/2228-30-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4500-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4500-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4500-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4500-3-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4500-4-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4500-5-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download