expiro | d01bde82b897c95402dcb14515ede1183a10a39a0dd25d7e903bb34fd495ea70

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 11:43

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General

Target

eb56120df27cbe738ef110cd302fe9ea_JaffaCakes118.exe
Size

417KB
MD5

eb56120df27cbe738ef110cd302fe9ea
SHA1

3b3fe892435860bec036cc0f1aa851e5eb16e184
SHA256

d01bde82b897c95402dcb14515ede1183a10a39a0dd25d7e903bb34fd495ea70
SHA512

48b6d3e866c7181511e2e29a369763956879c6a600dae00a7cb7e6b6b58fbf4e941fefab77dc1e8924da401f3ff48545027629d80dd54adbf22a61377af5db27
SSDEEP

6144:rSpwTEOzPSK5U2SoJ8VWack8V1ZmXRWLgKocUq8nOfaIROo71YvK09lw+45B:m+IK5U2SoysHmwLQcUqgsPBYv745B

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 4 IoCs

backdoor

resource	yara_rule
behavioral1/memory/1928-0-0x0000000000AEC000-0x0000000000B7F000-memory.dmp	family_expiro1
behavioral1/memory/1928-1-0x0000000000A80000-0x0000000000B7F000-memory.dmp	family_expiro1
behavioral1/memory/1928-2-0x0000000000AEC000-0x0000000000B7F000-memory.dmp	family_expiro1
behavioral1/memory/1928-3-0x0000000000A80000-0x0000000000B7F000-memory.dmp	family_expiro1

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2412	1928	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	eb56120df27cbe738ef110cd302fe9ea_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 2412	1928	eb56120df27cbe738ef110cd302fe9ea_JaffaCakes118.exe	30
PID 1928 wrote to memory of 2412	1928	eb56120df27cbe738ef110cd302fe9ea_JaffaCakes118.exe	30
PID 1928 wrote to memory of 2412	1928	eb56120df27cbe738ef110cd302fe9ea_JaffaCakes118.exe	30
PID 1928 wrote to memory of 2412	1928	eb56120df27cbe738ef110cd302fe9ea_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\eb56120df27cbe738ef110cd302fe9ea_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eb56120df27cbe738ef110cd302fe9ea_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 68
  2⤵
  - Program crash
  PID:2412

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

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Downloads

memory/1928-0-0x0000000000AEC000-0x0000000000B7F000-memory.dmp

Filesize
588KB

Download
memory/1928-1-0x0000000000A80000-0x0000000000B7F000-memory.dmp

Filesize
1020KB

Download
memory/1928-2-0x0000000000AEC000-0x0000000000B7F000-memory.dmp

Filesize
588KB

Download
memory/1928-3-0x0000000000A80000-0x0000000000B7F000-memory.dmp

Filesize
1020KB

Download