05a97f7d9906bca1073eea85404e3455194565da4499717c4b1da0e17f46317a

Analysis

max time kernel
140s
max time network
140s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06/09/2024, 20:32

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General

Target

2024-09-06_c53fc8d0085949ae6ac09b284df3fc89_cryptolocker.exe
Size

37KB
MD5

c53fc8d0085949ae6ac09b284df3fc89
SHA1

cc438a367915aaa749f9c8d3a47939704659f537
SHA256

05a97f7d9906bca1073eea85404e3455194565da4499717c4b1da0e17f46317a
SHA512

6cba97c9aab919e2401b5d3bc9e6b23eff0dcd1267b18dee7b212782c84fe193fd5107c8e1dede85fbd1293b46232b30b692903142dd8420989c6261e9c45e53
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITF:qDdFJy3QMOtEvwDpjjWMl7TF

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2616	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2512	2024-09-06_c53fc8d0085949ae6ac09b284df3fc89_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2512-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0012000000015ccc-11.dat	upx
behavioral1/memory/2512-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2616-26-0x0000000000500000-0x0000000000510000-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_c53fc8d0085949ae6ac09b284df3fc89_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 2512 wrote to memory of 2616	2512	2024-09-06_c53fc8d0085949ae6ac09b284df3fc89_cryptolocker.exe	31
PID 2512 wrote to memory of 2616	2512	2024-09-06_c53fc8d0085949ae6ac09b284df3fc89_cryptolocker.exe	31
PID 2512 wrote to memory of 2616	2512	2024-09-06_c53fc8d0085949ae6ac09b284df3fc89_cryptolocker.exe	31
PID 2512 wrote to memory of 2616	2512	2024-09-06_c53fc8d0085949ae6ac09b284df3fc89_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-09-06_c53fc8d0085949ae6ac09b284df3fc89_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-06_c53fc8d0085949ae6ac09b284df3fc89_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2512
- 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:2616

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
37KB

MD5
535c1270b9fbc9df110c2e1f6e9f500d

SHA1
b1e022412a442e8f78cf026d31e8f8a13d893be0

SHA256
8843c7d8e4725cde67a1708589c9c0cc9ae8ff1bfcb7568e15b156d983f3ea43

SHA512
689b0b3df613037e11f89e58fb8437926155934d56c735e098cf741f15128b4a8837926c35b328dcbd120923ce7624ee0910100b13c73d6f7fc308d220e99f06

Download Submit
memory/2512-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2512-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2512-3-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2512-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2512-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2616-18-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2616-25-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2616-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download