c126f0af0edbacde38876550c3be55ff8830d5cb2fb871d25dd682d224750880

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/09/2024, 11:03

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General

Target

2024-09-06_4c10fa32952750d2aaad11a79f5ec9cb_cryptolocker.exe
Size

37KB
MD5

4c10fa32952750d2aaad11a79f5ec9cb
SHA1

7626ee83fc1f9375e99d952c7d999e63d7696dc7
SHA256

c126f0af0edbacde38876550c3be55ff8830d5cb2fb871d25dd682d224750880
SHA512

7f0b3ef7254af582b1ab2b98dff6d5fd01a58432e5ed19e3e289d2783b95acd73fedab438640d2c8c3be57f12d2b58a84e4a868472f811f7c35233315d3b9284
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITS:qDdFJy3QMOtEvwDpjjWMl7TS

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024-09-06_4c10fa32952750d2aaad11a79f5ec9cb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1492	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4036-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023490-13.dat	upx
behavioral2/memory/4036-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1492-26-0x0000000000500000-0x0000000000510000-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	2024-09-06_4c10fa32952750d2aaad11a79f5ec9cb_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 4036 wrote to memory of 1492	4036	2024-09-06_4c10fa32952750d2aaad11a79f5ec9cb_cryptolocker.exe	84
PID 4036 wrote to memory of 1492	4036	2024-09-06_4c10fa32952750d2aaad11a79f5ec9cb_cryptolocker.exe	84
PID 4036 wrote to memory of 1492	4036	2024-09-06_4c10fa32952750d2aaad11a79f5ec9cb_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-06_4c10fa32952750d2aaad11a79f5ec9cb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-06_4c10fa32952750d2aaad11a79f5ec9cb_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4036
- 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:1492

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

Replay Monitor

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Downloads

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

Filesize
37KB

MD5
1ee262da402f225e262dae1912ddcbc9

SHA1
35abbc34376ef09e333d8af6dee59b2fd33ed1c6

SHA256
dbf2f1ca708405c9d1aba4e135d4a5f06660e25b095bdfee02b469244ac539f7

SHA512
dab26290fa746834a8f87319b5e0d06b06292d9cdb62e32461d92dc076a68a163faed83cc57c5615aae6c5073dfd260edaf83bd2ab895af02c19ce9513c06320

Download Submit
memory/1492-20-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download
memory/1492-19-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/1492-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4036-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4036-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4036-2-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4036-3-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4036-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download