f00a374b44e6064bf08ee7ed8a77b3512f9dcb1233964a2706ac67ddcaa63b8f

Analysis

max time kernel
133s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-09-2024 04:13

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General

Target

2024-09-13_a4921ed78c35ad0164971a943ee771c1_cryptolocker.exe
Size

59KB
MD5

a4921ed78c35ad0164971a943ee771c1
SHA1

12e3bc958983f3f0c1df0170948c20bf135401ba
SHA256

f00a374b44e6064bf08ee7ed8a77b3512f9dcb1233964a2706ac67ddcaa63b8f
SHA512

47fae6c6bc944c8cb48f057a67c2a300e45ca20c4f113b946342f21b299aa4a0f96d62cbbb58ed7865ac29258a98564e63b277a4c1c0f10010f84318884d7dc1
SSDEEP

768:f6LsoEEeegiZPvEhHSG+gz5NQXtckstOOtEvwDpj/WaD3TUogs/VXpAPWB:f6QFElP6n+g9u9cvMOtEvwDpjnpVXzB

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2504	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2464	2024-09-13_a4921ed78c35ad0164971a943ee771c1_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2464-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000012234-11.dat	upx
behavioral1/memory/2464-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2504-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2504-26-0x0000000000500000-0x0000000000510000-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	2024-09-13_a4921ed78c35ad0164971a943ee771c1_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 2464 wrote to memory of 2504	2464	2024-09-13_a4921ed78c35ad0164971a943ee771c1_cryptolocker.exe	30
PID 2464 wrote to memory of 2504	2464	2024-09-13_a4921ed78c35ad0164971a943ee771c1_cryptolocker.exe	30
PID 2464 wrote to memory of 2504	2464	2024-09-13_a4921ed78c35ad0164971a943ee771c1_cryptolocker.exe	30
PID 2464 wrote to memory of 2504	2464	2024-09-13_a4921ed78c35ad0164971a943ee771c1_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-13_a4921ed78c35ad0164971a943ee771c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-13_a4921ed78c35ad0164971a943ee771c1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2464
- 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:2504

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

Replay Monitor

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Downloads

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

Filesize
59KB

MD5
f26fa47519e7adc0f114a9a9530a012e

SHA1
3294e54d580029d9ad669dee3ba016353e77d631

SHA256
b559e6d375f27d2d4fc67aba56409468296c50619218f9cf0718114da554fa36

SHA512
c11c0d0975e7a94f870d1adf8007141fc42dd2defd35433af56bd6efefd1c628ed155704baa25db0ebab96753963ad724746c886b7069f1fc0d32231db79031d

Download Submit
memory/2464-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2464-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2464-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2464-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2464-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2504-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2504-18-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2504-19-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2504-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download