1825d34539d9ced70be1cc5714017a243a8bdbeb93349385846318b5bc2dca5d

Analysis

max time kernel
132s
max time network
139s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
20-08-2024 13:56

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General

Target

2024-08-20_78d0b565ce3766967ace00f1a460781b_cryptolocker.exe
Size

60KB
MD5

78d0b565ce3766967ace00f1a460781b
SHA1

a81a8f3b57a381865ef05765e7f273f350626cac
SHA256

1825d34539d9ced70be1cc5714017a243a8bdbeb93349385846318b5bc2dca5d
SHA512

6db76c12030db073b64088530a3af9625654f2e22ce11045e70ca0044589d328710e9ef1684028435ffda26422e9f6a5cd7e3a00b1ebfbb9ff643737d325b863
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax+N+:z6QFElP6n+gKmddpMOtEvwDpj9aYaF

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1736	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1956	2024-08-20_78d0b565ce3766967ace00f1a460781b_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1956-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00080000000122e3-11.dat	upx
behavioral1/memory/1736-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1956-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1736-25-0x0000000000500000-0x0000000000510000-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	2024-08-20_78d0b565ce3766967ace00f1a460781b_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 1956 wrote to memory of 1736	1956	2024-08-20_78d0b565ce3766967ace00f1a460781b_cryptolocker.exe	30
PID 1956 wrote to memory of 1736	1956	2024-08-20_78d0b565ce3766967ace00f1a460781b_cryptolocker.exe	30
PID 1956 wrote to memory of 1736	1956	2024-08-20_78d0b565ce3766967ace00f1a460781b_cryptolocker.exe	30
PID 1956 wrote to memory of 1736	1956	2024-08-20_78d0b565ce3766967ace00f1a460781b_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-08-20_78d0b565ce3766967ace00f1a460781b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-20_78d0b565ce3766967ace00f1a460781b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1956
- 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:1736

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
60KB

MD5
a9638b1599f6d8e24a84a11a0f82e0a8

SHA1
724bfb9416b24e6b197719caf9043961332b411d

SHA256
01ebf6bc61068a62281375c45fb55291bef4eb94f8614567ea4f7207e586b0af

SHA512
9978bf138ea80603f6e4f92eff0a06d9fba4b06ae40c3e5b52f79193a2ac7e47364062ce5c622b7ee57d226d2e957c735376077ac93c86c3d3722fb630c982db

Download Submit
memory/1736-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1736-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1736-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1956-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1956-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1956-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1956-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1956-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download