b3b31ba4e4c2d0ca584f67ab209740c005d6d1fbe6ce6a2c29411a6652c494e5

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15/10/2024, 02:13

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General

Target

2024-10-15_86353115eb31fec2dbc50795e4084756_cryptolocker.exe
Size

40KB
MD5

86353115eb31fec2dbc50795e4084756
SHA1

2e1f9202e8c28f3d11b8203fa42b529f684d03b3
SHA256

b3b31ba4e4c2d0ca584f67ab209740c005d6d1fbe6ce6a2c29411a6652c494e5
SHA512

8839a3b96b5e0207479e79a058298fc18ca510addd1b5a9e77f35e727a1424e84f36fc78fe445c1d34d009f9a531c13b77409e0bfbc17631a33bbd65799c2e71
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaB01:qDdFJy3QMOtEvwDpjjWMl7TdW

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	2024-10-15_86353115eb31fec2dbc50795e4084756_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3540	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2216-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000c000000023b21-13.dat	upx
behavioral2/memory/2216-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3540-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-15_86353115eb31fec2dbc50795e4084756_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 3540	2216	2024-10-15_86353115eb31fec2dbc50795e4084756_cryptolocker.exe	83
PID 2216 wrote to memory of 3540	2216	2024-10-15_86353115eb31fec2dbc50795e4084756_cryptolocker.exe	83
PID 2216 wrote to memory of 3540	2216	2024-10-15_86353115eb31fec2dbc50795e4084756_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-10-15_86353115eb31fec2dbc50795e4084756_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-15_86353115eb31fec2dbc50795e4084756_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2216
- 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:3540

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
40KB

MD5
35eb3086543401e4a1c47c40ea1ffde6

SHA1
178215b35954efed37054c0e19b476928fdafcd7

SHA256
fbf4fb90e15132369cbf21d34530319b1916ed19ce49216494a4823e72127470

SHA512
6a36a2634d128e3d5081ab1dfc75d2207f5c1523610ff0c18538ea8d4acdab395a2cdabf2e9ee0471d08cb2f0ae421349b85dbdf94abeaf546bd5e96221f9d6c

Download Submit
memory/2216-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2216-1-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/2216-2-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/2216-3-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download
memory/2216-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3540-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3540-21-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3540-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download