cc8012fe4a90c476ce2fd73176cf04a4072857f6a223c4f393e61a36afdf3ee8

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 03:35

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General

Target

2024-09-21_7edb0c6e1d35551dc495e7143ce6ac01_cryptolocker.exe
Size

61KB
MD5

7edb0c6e1d35551dc495e7143ce6ac01
SHA1

efc78b5415538bf01acfc90ead374fa029987af0
SHA256

cc8012fe4a90c476ce2fd73176cf04a4072857f6a223c4f393e61a36afdf3ee8
SHA512

10e5f5eebb102d00e069c30ce02963955dbdfb75aded457bb7005d4fdce545a38c7daab1dcfbfea6bba93c6c9769bf02f1e6adc608a9eb2bc0e796031bb4f3f8
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUFHC:T6a+rdOOtEvwDpjN+i

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2548	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	2024-09-21_7edb0c6e1d35551dc495e7143ce6ac01_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0009000000012119-11.dat	upx
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2220-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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_7edb0c6e1d35551dc495e7143ce6ac01_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 2220 wrote to memory of 2548	2220	2024-09-21_7edb0c6e1d35551dc495e7143ce6ac01_cryptolocker.exe	30
PID 2220 wrote to memory of 2548	2220	2024-09-21_7edb0c6e1d35551dc495e7143ce6ac01_cryptolocker.exe	30
PID 2220 wrote to memory of 2548	2220	2024-09-21_7edb0c6e1d35551dc495e7143ce6ac01_cryptolocker.exe	30
PID 2220 wrote to memory of 2548	2220	2024-09-21_7edb0c6e1d35551dc495e7143ce6ac01_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-21_7edb0c6e1d35551dc495e7143ce6ac01_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_7edb0c6e1d35551dc495e7143ce6ac01_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2220
- 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:2548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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
61KB

MD5
bc278d14b3c88003947de84f2a9f3e43

SHA1
691a7efaa372cf3024e7151acfa0076c5ee0c38a

SHA256
a2685e51dc801de872810806bd285549ca62a7a0e1334332b0bb8ab471891972

SHA512
7bf89d8f3ac71bed3e287a837102103c364caf2950746c1a3feedcdb5c449b910e88c5522af14f47533089060f1451060f89721defee77953bbdb439cc6bece3

Download Submit
memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2220-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2220-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2220-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2548-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download