91037649da5dc3c1323441bc0109aeca5a8391f2cb736a4e62e1ff9513bf0658

Analysis

max time kernel
148s
max time network
153s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
20/11/2024, 03:40

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General

Target

2024-11-20_efde936ce9fde29b79b12f4590a16da2_cryptolocker.exe
Size

36KB
MD5

efde936ce9fde29b79b12f4590a16da2
SHA1

c040e7753b614d505c7f29307606187153002152
SHA256

91037649da5dc3c1323441bc0109aeca5a8391f2cb736a4e62e1ff9513bf0658
SHA512

4262424aa24f760cb7d90ad9bc7c86c2b24420573245e82160c99c0a3a65dea07bffee586494f6810d25aa35ac0590a7da4c1d880f17c3bc46e79b34ca974b11
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITb:qDdFJy3QMOtEvwDpjjWMl7Tb

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2900	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2488	2024-11-20_efde936ce9fde29b79b12f4590a16da2_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2488-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0009000000012266-11.dat	upx
behavioral1/memory/2488-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2900-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2900-27-0x0000000000500000-0x0000000000510000-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	2024-11-20_efde936ce9fde29b79b12f4590a16da2_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 2488 wrote to memory of 2900	2488	2024-11-20_efde936ce9fde29b79b12f4590a16da2_cryptolocker.exe	30
PID 2488 wrote to memory of 2900	2488	2024-11-20_efde936ce9fde29b79b12f4590a16da2_cryptolocker.exe	30
PID 2488 wrote to memory of 2900	2488	2024-11-20_efde936ce9fde29b79b12f4590a16da2_cryptolocker.exe	30
PID 2488 wrote to memory of 2900	2488	2024-11-20_efde936ce9fde29b79b12f4590a16da2_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-11-20_efde936ce9fde29b79b12f4590a16da2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-20_efde936ce9fde29b79b12f4590a16da2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2488
- 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:2900

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
36KB

MD5
e0ed45b1678b833009643636364f99f2

SHA1
3f9c934f1b4644340d605c814d05f9b237f57efc

SHA256
2ad93c21f8ed1fbb9bde22bf993bd0face67c53c89c83b66d87b4bf3fdd351fa

SHA512
b3df3ff089f86fe5e0425ab341d7d79923904b6e17258868d90e8b8bc73d1db3012b91cb615ebe5dbd29d7221551619340c7464b063ccefa7c89a1b14cdff915

Download Submit
memory/2488-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2488-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2488-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2488-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2488-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2900-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2900-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2900-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2900-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download