75f50accfbb4f83f30568a9d07aa89c59912e796c12f5e6eeff6e7025d86b574

Analysis

max time kernel
132s
max time network
139s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
05/08/2024, 10:44

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General

Target

2024-08-05_37da6f45ddafcd24ba25dc767919f18c_cryptolocker.exe
Size

59KB
MD5

37da6f45ddafcd24ba25dc767919f18c
SHA1

bcfa5da9c77552c58ed9ece5048ef06ebe2ac39a
SHA256

75f50accfbb4f83f30568a9d07aa89c59912e796c12f5e6eeff6e7025d86b574
SHA512

766a41e744b5f235de17df0962e1e2545da6ae6461911cc89f0a519fa8210745c20e66f21e32425378971e7864f43ea97ec467ed5a8175d39a060ef249108f67
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax+Ng:z6QFElP6n+gKmddpMOtEvwDpj9aYan

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2520	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
304	2024-08-05_37da6f45ddafcd24ba25dc767919f18c_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/304-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b0000000122cf-11.dat	upx
behavioral1/memory/304-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2520-25-0x0000000000500000-0x0000000000510000-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	2024-08-05_37da6f45ddafcd24ba25dc767919f18c_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 304 wrote to memory of 2520	304	2024-08-05_37da6f45ddafcd24ba25dc767919f18c_cryptolocker.exe	31
PID 304 wrote to memory of 2520	304	2024-08-05_37da6f45ddafcd24ba25dc767919f18c_cryptolocker.exe	31
PID 304 wrote to memory of 2520	304	2024-08-05_37da6f45ddafcd24ba25dc767919f18c_cryptolocker.exe	31
PID 304 wrote to memory of 2520	304	2024-08-05_37da6f45ddafcd24ba25dc767919f18c_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-08-05_37da6f45ddafcd24ba25dc767919f18c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-05_37da6f45ddafcd24ba25dc767919f18c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:304
- 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:2520

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
a687544bce8781729ec8ba997d31ec46

SHA1
aa1a9cc60c1b55af86b3b64f3859e64065b660da

SHA256
7142c57678d1c08ccc1eaf8701a61f886f62f81d233a99acf456127b810c8989

SHA512
5a6575d41d5c364a13a043f895d4d1901c1adc066dc2f35e579cfe6e0945e549e7f2caed205d5c3b02680c023108b77b293054183b3744fd0479f85fb7e952f1

Download Submit
memory/304-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/304-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/304-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/304-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/304-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2520-24-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2520-17-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2520-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download