cc379c00410271d322812f34ff412da8945d55e19e74f113e865cc93af908a32

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-09-2024 01:05

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General

Target

2024-09-05_722d1141fc9151d9725fbbb8821ee7fb_cryptolocker.exe
Size

39KB
MD5

722d1141fc9151d9725fbbb8821ee7fb
SHA1

3d8d4e076fb8ef14922b53d4bda297b33bddea1d
SHA256

cc379c00410271d322812f34ff412da8945d55e19e74f113e865cc93af908a32
SHA512

0d51834792d353edbdbe34339ff162ca67a8e39d3a1ff09331aa3a15f2a5e185e8a1d576f8785ecd11253e9fb771c2cba08ad921b26182236943c19d32a2b173
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITI:qDdFJy3QMOtEvwDpjjWMl7TI

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2704	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2140	2024-09-05_722d1141fc9151d9725fbbb8821ee7fb_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2140-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d000000012262-11.dat	upx
behavioral1/memory/2140-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2704-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2704-27-0x0000000000500000-0x0000000000510000-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	2024-09-05_722d1141fc9151d9725fbbb8821ee7fb_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 2704	2140	2024-09-05_722d1141fc9151d9725fbbb8821ee7fb_cryptolocker.exe	30
PID 2140 wrote to memory of 2704	2140	2024-09-05_722d1141fc9151d9725fbbb8821ee7fb_cryptolocker.exe	30
PID 2140 wrote to memory of 2704	2140	2024-09-05_722d1141fc9151d9725fbbb8821ee7fb_cryptolocker.exe	30
PID 2140 wrote to memory of 2704	2140	2024-09-05_722d1141fc9151d9725fbbb8821ee7fb_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-05_722d1141fc9151d9725fbbb8821ee7fb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_722d1141fc9151d9725fbbb8821ee7fb_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2140
- 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:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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

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

Filesize
39KB

MD5
1dc4b85b20b20296c1dd4156d462dfe4

SHA1
c2b2fcca9d7919a55189db352241405f0dcca2ea

SHA256
f8333278e272430e74af5a6f986df52a91c80fc867fa19470bc88f3108030d96

SHA512
a1a817361f77832393226544a24d5673083ede6b7bb930a9359d476f5df4a2d8a5159aec97203ae2cadf6e31ad0a2fff0f43fa4f6be097b4f976040cbf0f160f

Download Submit
memory/2140-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2140-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2140-2-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/2140-9-0x0000000077080000-0x0000000077229000-memory.dmp

Filesize
1.7MB

Download
memory/2140-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2704-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2704-26-0x0000000077080000-0x0000000077229000-memory.dmp

Filesize
1.7MB

Download
memory/2704-19-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2704-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download