expiro | c97ea03193efa5f11742dad4a70c53ea528772f2eb4241ba2f097df096f14658

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
22-02-2025 04:49

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General

Target

JaffaCakes118_175933105d14f12450fc6b8800f8e6a0.exe
Size

338KB
MD5

175933105d14f12450fc6b8800f8e6a0
SHA1

cca7a7b49d42f8c619af6648d350268e269206c3
SHA256

c97ea03193efa5f11742dad4a70c53ea528772f2eb4241ba2f097df096f14658
SHA512

fa8cb7102ade492710183fcfcb9f32354555399b8bfb23ce6b2188f02491be6669d0fd28aa8adbdd8d0ded32eb13b303c8b3d909d04f091adf2503ca5b8cfcae
SSDEEP

6144:MDQ1VY7yScIRouWgiULDZAOHcBCk4x7rG3K8AQbrOZggdu:MDQ1nScI+uWdULD78BCk4x7CE

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
behavioral2/memory/2216-1-0x0000000001000000-0x00000000010A5000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2408	2216	WerFault.exe	81

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	JaffaCakes118_175933105d14f12450fc6b8800f8e6a0.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_175933105d14f12450fc6b8800f8e6a0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_175933105d14f12450fc6b8800f8e6a0.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2216 -s 456
  2⤵
  - Program crash
  PID:2408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2216 -ip 2216
1⤵
PID:3432

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

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Downloads

memory/2216-0-0x0000000001000000-0x00000000010A5000-memory.dmp

Filesize
660KB

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memory/2216-1-0x0000000001000000-0x00000000010A5000-memory.dmp

Filesize
660KB

Download