74dab9400ac42d4ae199ae2e539b0cab96bf322d32bf33db8b6ba87c67c965ad

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
31-10-2023 22:24

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General

Target

NEAS.2023-09-07_b201083f8ce1ddceb1aaf7b8d3ad8757_cryptolocker_JC.exe
Size

95KB
MD5

b201083f8ce1ddceb1aaf7b8d3ad8757
SHA1

b66de8eab0f5e77b1bd83df3cd2c91b4d91d18b2
SHA256

74dab9400ac42d4ae199ae2e539b0cab96bf322d32bf33db8b6ba87c67c965ad
SHA512

76455916fe4079c3696c4a8681ca5d27ec1b12348fa847428e837773a2c7a8adff8be5d9367f38033c56b673de8af0fca48d807ddcecaba1dc974b6e7151b9e3
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbbr/BK:z6a+CdOOtEvwDpjc8

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-1-5-21-984744499-3605095035-265325720-1000\Control Panel\International\Geo\Nation	NEAS.2023-09-07_b201083f8ce1ddceb1aaf7b8d3ad8757_cryptolocker_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
4900	asih.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4976-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000222f4-13.dat	upx
behavioral2/files/0x00090000000222f4-15.dat	upx
behavioral2/files/0x00090000000222f4-16.dat	upx
behavioral2/memory/4976-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4900-26-0x0000000000500000-0x0000000000510000-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 4976 wrote to memory of 4900	4976	NEAS.2023-09-07_b201083f8ce1ddceb1aaf7b8d3ad8757_cryptolocker_JC.exe	86
PID 4976 wrote to memory of 4900	4976	NEAS.2023-09-07_b201083f8ce1ddceb1aaf7b8d3ad8757_cryptolocker_JC.exe	86
PID 4976 wrote to memory of 4900	4976	NEAS.2023-09-07_b201083f8ce1ddceb1aaf7b8d3ad8757_cryptolocker_JC.exe	86

C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-07_b201083f8ce1ddceb1aaf7b8d3ad8757_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-07_b201083f8ce1ddceb1aaf7b8d3ad8757_cryptolocker_JC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4976
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4900

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
95KB

MD5
cba5eb4753f3c78a62cf52aa38a29499

SHA1
ad219e5094876d7ec9627e7cc1cecdd50593bd20

SHA256
6c59d712fa064961b79578a1d8dc2b9677c0eed87e10185542a9d2ce68ebff64

SHA512
1418fad4b4b60c5a440052ae93db55e10d85b797348bb9a08736d190928a438b4767ad63bca06ee15d3e01b1f54f69a7db99c11b4e6b4c299a135430554704b0

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

Filesize
95KB

MD5
cba5eb4753f3c78a62cf52aa38a29499

SHA1
ad219e5094876d7ec9627e7cc1cecdd50593bd20

SHA256
6c59d712fa064961b79578a1d8dc2b9677c0eed87e10185542a9d2ce68ebff64

SHA512
1418fad4b4b60c5a440052ae93db55e10d85b797348bb9a08736d190928a438b4767ad63bca06ee15d3e01b1f54f69a7db99c11b4e6b4c299a135430554704b0

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

Filesize
95KB

MD5
cba5eb4753f3c78a62cf52aa38a29499

SHA1
ad219e5094876d7ec9627e7cc1cecdd50593bd20

SHA256
6c59d712fa064961b79578a1d8dc2b9677c0eed87e10185542a9d2ce68ebff64

SHA512
1418fad4b4b60c5a440052ae93db55e10d85b797348bb9a08736d190928a438b4767ad63bca06ee15d3e01b1f54f69a7db99c11b4e6b4c299a135430554704b0

Download Submit
memory/4900-20-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4900-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4900-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4976-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4976-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4976-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4976-3-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4976-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download