expiro | 8ff242a5decf90c7a1a9f98e621d347c0c8923d23d58b866713001676c00da60

General

Target

JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Size

221KB
MD5

efca5b4c5fd58b63d0849b344da07356
SHA1

0be9545f57a170eb96b7c8ff42c6c7e00a155d28
SHA256

8ff242a5decf90c7a1a9f98e621d347c0c8923d23d58b866713001676c00da60
SHA512

18f48f41c2015688c1b40759df4d5add5eb3b663cf195c49dc7408b4c2c8db0dbb7adf3926aad4f258ae8c9cedfbe4f3d52e4c0898951c97c526c3970857ba79
SSDEEP

6144:zDzwcnJ67K/a/E6znok3VY3tGYG3nrFzWqmoz6:zZ6p5zoQ63GKq

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/1160-2-0x0000000001000000-0x0000000001084000-memory.dmp	family_expiro1

Downloads MZ/PE file 1 IoCs

flow	pid	Process
35	4624	Process not Found

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	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4172	MicrosoftEdgeUpdate.exe

Modifies registry class 13 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000_Classes\.vcf	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\ = "vCard File"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\shell\open\command\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\" /vcard %1"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\",1"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard\Extension = ".vcf"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.wab	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000_Classes\.vcf\Content Type = "text/x-vcard"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\shell\open\command	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Key created	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000_Classes\Local Settings	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000_Classes\.vcf\ = "vcard_wab_auto_file"	JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_efca5b4c5fd58b63d0849b344da07356.exe"
1⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:1160

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3876

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIwIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMzNzEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDE5Mjc1MzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTI2NzQ0Njk0Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1160-0-0x0000000001000000-0x0000000001084000-memory.dmp

Filesize
528KB

Download
memory/1160-1-0x0000000001003000-0x0000000001004000-memory.dmp

Filesize
4KB

Download
memory/1160-2-0x0000000001000000-0x0000000001084000-memory.dmp

Filesize
528KB

Download

Analysis

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