expiro | 985225cecc47e9f5910f6770e0b7b73fa53a69b18469d112f581264c2a2f508f

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
11-12-2024 22:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

e36cb625293aa37390821bf199e86080_JaffaCakes118.exe
Size

647KB
MD5

e36cb625293aa37390821bf199e86080
SHA1

58e38f965e4f6f5fff569189429ed0161edd1b7f
SHA256

985225cecc47e9f5910f6770e0b7b73fa53a69b18469d112f581264c2a2f508f
SHA512

b0a4747bad07ace70a9197590d9b7c7bbfb7a947eafc82fc2648524538ceda3813745e7b7c76a499f9898a3f369c703b92766d603973bb119a935859c3cc6e15
SSDEEP

12288:hEsADzr9PXyDlWKXs/5jI6d+0zLgHYHdVSgdwPslhuwkvf41QRuTx34:hEsAPJfyDlWCc5jId0zQmdVSxwacQw

Score

10^/10

expiro backdoor discovery

Malware Config

Signatures

Expiro family
expiro
Expiro, m0yv
Expiro aka m0yv is a multi-functional backdoor written in C++.
backdoor expiro

Expiro payload 1 IoCs

backdoor

resource	yara_rule
behavioral1/memory/2140-2-0x0000000000400000-0x00000000004F3000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3000	2140	WerFault.exe	29

System Location Discovery: System Language Discovery 1 TTPs 1 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	e36cb625293aa37390821bf199e86080_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 3000	2140	e36cb625293aa37390821bf199e86080_JaffaCakes118.exe	31
PID 2140 wrote to memory of 3000	2140	e36cb625293aa37390821bf199e86080_JaffaCakes118.exe	31
PID 2140 wrote to memory of 3000	2140	e36cb625293aa37390821bf199e86080_JaffaCakes118.exe	31
PID 2140 wrote to memory of 3000	2140	e36cb625293aa37390821bf199e86080_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\e36cb625293aa37390821bf199e86080_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e36cb625293aa37390821bf199e86080_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 56
  2⤵
  - Program crash
  PID:3000

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

Loading Replay Monitor...

Downloads

memory/2140-0-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/2140-1-0x000000000044A000-0x000000000044B000-memory.dmp

Filesize
4KB

Download
memory/2140-2-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download