expiro | 16e6d4e525a305d0fd821d77850fa1e47bc67d5fffd06e5a06714b0c177de2b0

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-01-2025 19:15

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General

Target

JaffaCakes118_6eec5de629ed5c66ca3f34284af83098.exe
Size

224KB
MD5

6eec5de629ed5c66ca3f34284af83098
SHA1

1bdc688c59fe2c98e3f07cc47a58b78615b3308e
SHA256

16e6d4e525a305d0fd821d77850fa1e47bc67d5fffd06e5a06714b0c177de2b0
SHA512

7455725cd73b5deeb5c6560bb18dc37d84a9fa50b98715a14177a7786e14f6d2431fbfd1c18ec69887ba6023baf423626e0454f4b2ef7aee73f292f0ae2b2c5b
SSDEEP

6144:Novbv4GLVf7ktrjOfh3/XWdcHZcJCh1s+CsUn6ai:Novbv4a97QjC3/XWdcHZoo1JCsUn6ai

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/1816-1-0x0000000000400000-0x000000000054D000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4160	1816	WerFault.exe	82

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_6eec5de629ed5c66ca3f34284af83098.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6eec5de629ed5c66ca3f34284af83098.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6eec5de629ed5c66ca3f34284af83098.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 268
  2⤵
  - Program crash
  PID:4160

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1816 -ip 1816
1⤵
PID:1596

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/1816-0-0x0000000000400000-0x000000000054D000-memory.dmp

Filesize
1.3MB

Download
memory/1816-1-0x0000000000400000-0x000000000054D000-memory.dmp

Filesize
1.3MB

Download