c38c071ab008bb597916c53ab348d3da2557846d3b0b6415bbe05ef1fb2a3aeb

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2024 07:23

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General

Target

2024-11-21_1ad897bcb31fb9e740b35d45dc07e41b_cryptolocker.exe
Size

62KB
MD5

1ad897bcb31fb9e740b35d45dc07e41b
SHA1

be41d3a26a3e8d4239e25a744e4e0887e30c30dc
SHA256

c38c071ab008bb597916c53ab348d3da2557846d3b0b6415bbe05ef1fb2a3aeb
SHA512

ee437abbaeed4fe61abf0b25493fcbbbc907a783c2c702297f08fe37b9b114ff94cf48244f0c1017c236a1f5affd0cb80dc3f7abb212507bc7480f739bbe805b
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP3qhn:H6QFElP6n+gou9cvMOtEvwDpjCpVXhhn

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2024-11-21_1ad897bcb31fb9e740b35d45dc07e41b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3592	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4760-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000c000000023b10-13.dat	upx
behavioral2/memory/4760-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3592-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

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	2024-11-21_1ad897bcb31fb9e740b35d45dc07e41b_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 3592	4760	2024-11-21_1ad897bcb31fb9e740b35d45dc07e41b_cryptolocker.exe	82
PID 4760 wrote to memory of 3592	4760	2024-11-21_1ad897bcb31fb9e740b35d45dc07e41b_cryptolocker.exe	82
PID 4760 wrote to memory of 3592	4760	2024-11-21_1ad897bcb31fb9e740b35d45dc07e41b_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-11-21_1ad897bcb31fb9e740b35d45dc07e41b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-21_1ad897bcb31fb9e740b35d45dc07e41b_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3592

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\asih.exe

Filesize
62KB

MD5
416debb7a50c4ff7935769692b44230c

SHA1
ab03e435dbc0fb2f7bd3d3b934cbaacb4a65ae72

SHA256
54299d52fef46641139c287c08e80d92526e91c3eaa8eb104893cc4114130e4e

SHA512
971879fe8dd2ffa989190f5594133ee0ca46e39458d5834f623d497e4d969d342a4b0d7fe28c9dee60ce44476cc3b383fffcfb6a49160911dcc91e7b3117e54c

Download Submit
memory/3592-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3592-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3592-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4760-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4760-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4760-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4760-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4760-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download