4dd7ec0915529e3e52b1e5f1227db546e25b9f13c01d52281588dcfc49e94e5f

Analysis

max time kernel
132s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-09-2024 12:16

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General

Target

2024-09-05_d390dd76a955032e3045be216bdbf419_cryptolocker.exe
Size

60KB
MD5

d390dd76a955032e3045be216bdbf419
SHA1

358f7e4dc64042ebbc36c3c7db5b3b88f7a65b2a
SHA256

4dd7ec0915529e3e52b1e5f1227db546e25b9f13c01d52281588dcfc49e94e5f
SHA512

052b2e217dcc9ff0c95304abffeb74dd93e4544b7f0221d8dc5d50d51cdbaca50e3243731b50d7b232f16438b3e5402a39abb828b8c96d432708399a0acbc7eb
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax+Na:z6QFElP6n+gKmddpMOtEvwDpj9aYaJ

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
480	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2068	2024-09-05_d390dd76a955032e3045be216bdbf419_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001225b-11.dat	upx
behavioral1/memory/2068-12-0x00000000005F0000-0x0000000000600000-memory.dmp	upx
behavioral1/memory/2068-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/480-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/480-27-0x0000000000500000-0x0000000000510000-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	2024-09-05_d390dd76a955032e3045be216bdbf419_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 2068 wrote to memory of 480	2068	2024-09-05_d390dd76a955032e3045be216bdbf419_cryptolocker.exe	31
PID 2068 wrote to memory of 480	2068	2024-09-05_d390dd76a955032e3045be216bdbf419_cryptolocker.exe	31
PID 2068 wrote to memory of 480	2068	2024-09-05_d390dd76a955032e3045be216bdbf419_cryptolocker.exe	31
PID 2068 wrote to memory of 480	2068	2024-09-05_d390dd76a955032e3045be216bdbf419_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-09-05_d390dd76a955032e3045be216bdbf419_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_d390dd76a955032e3045be216bdbf419_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2068
- 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:480

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
f235613081c82a52a2cf2920c7b58815

SHA1
783610b07abd8c4ec9a1197e0a3f2e8ccea98370

SHA256
85ac87e635a2d7f15daa48a27d8c97683f12c1332cd329d32ea6e5321833b457

SHA512
3a1416b9b9a7354ccf8706093908fe00bd7ab094088eb7d0caed3b531456991dc6d2cf49681a0cd1a2328b2a1dcfc8934d7c998a19c56caf40ac573e8d8508aa

Download Submit
memory/480-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/480-19-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/480-20-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/480-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2068-2-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2068-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2068-3-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2068-12-0x00000000005F0000-0x0000000000600000-memory.dmp

Filesize
64KB

Download
memory/2068-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download