e22618615f106997350ef16cd12b35ba094fca65f0600e8ebf3bf83f8c78a61e

Analysis

max time kernel
141s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 02:25

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General

Target

2024-09-21_27f90ceeca247dab6433a337caeab9a0_cryptolocker.exe
Size

40KB
MD5

27f90ceeca247dab6433a337caeab9a0
SHA1

5f4844469ab524d62c7de3230658a21bea3efc2b
SHA256

e22618615f106997350ef16cd12b35ba094fca65f0600e8ebf3bf83f8c78a61e
SHA512

1dc94b07009a718d730a4bcf80491e0a0343bcfe01444daeeba9d93ebb467466ed5a08ea9dc1f4002cb2c1f056b3e2b73de4d3f888af94aff98d71ef5e832771
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY9Sv:qDdFJy3QMOtEvwDpjjWMl7TZv

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2332	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2572	2024-09-21_27f90ceeca247dab6433a337caeab9a0_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2572-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0007000000012117-11.dat	upx
behavioral1/memory/2332-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2572-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2332-27-0x0000000000500000-0x0000000000510000-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	2024-09-21_27f90ceeca247dab6433a337caeab9a0_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 2572 wrote to memory of 2332	2572	2024-09-21_27f90ceeca247dab6433a337caeab9a0_cryptolocker.exe	30
PID 2572 wrote to memory of 2332	2572	2024-09-21_27f90ceeca247dab6433a337caeab9a0_cryptolocker.exe	30
PID 2572 wrote to memory of 2332	2572	2024-09-21_27f90ceeca247dab6433a337caeab9a0_cryptolocker.exe	30
PID 2572 wrote to memory of 2332	2572	2024-09-21_27f90ceeca247dab6433a337caeab9a0_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-21_27f90ceeca247dab6433a337caeab9a0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_27f90ceeca247dab6433a337caeab9a0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2572
- 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:2332

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
40KB

MD5
b4daba000d4dc020de60d8cf72bd821b

SHA1
c3f2e55323d3b08b0c4d82a657f9a7b7a797c905

SHA256
8a4caf2e0f219d0ab97d9a35eb5b050f312e594ee72cdd8667945b19ee38daa2

SHA512
e83726403b274b9a38d06aefbb0a8fcc38cd6d07627db48e822259dd80a29bdb85791df2be72e02bdbe13f29fe9fdd945ffaf1f4c688544e2974ee55e52ab443

Download Submit
memory/2332-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2332-20-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2332-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2332-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2572-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2572-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2572-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2572-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2572-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download