expiro | abf442d8112f2a624cdbaa8a90ba2f91f9776abbc6ee0d952de33e79e5548e9a

Analysis

max time kernel
149s
max time network
152s
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 16:21

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General

Target

JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
Size

1.3MB
MD5

6de4d2fd080960344ac8fac697c85556
SHA1

272641430e0ca1ac66c8d8e15280ef447fb89e44
SHA256

abf442d8112f2a624cdbaa8a90ba2f91f9776abbc6ee0d952de33e79e5548e9a
SHA512

55da3f1315fd6f62296d6d1b8fef3e1e509adf8be8aa0fd09aaa0afe47d483687492310c3b92af8f4407ccab6344379f438b65cf88aba2d31cf464b1a8a154c7
SSDEEP

24576:uPFi9XiWl8dg0mEx24J302pd34dBp2DPP4TWdYwjRUwMRLP82gI+xzcTKUJLFF:4i9XiNN4dBuPgTxwjRUlF5WxzstL

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/3676-2-0x0000000000400000-0x0000000000685000-memory.dmp	family_expiro1

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\R:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\S:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\V:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\B:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\O:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\P:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\Q:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\I:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\L:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\N:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\Y:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\X:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\Z:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\A:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\E:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\J:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\U:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\T:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\W:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\G:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\H:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\K:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
File opened (read-only)	\??\M:	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe

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_6de4d2fd080960344ac8fac697c85556.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3676	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
3676	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3676	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
Token: SeBackupPrivilege	3676	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
Token: SeRestorePrivilege	3676	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
Token: SeShutdownPrivilege	3676	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
Token: SeTakeOwnershipPrivilege	3676	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
Token: SeTakeOwnershipPrivilege	3676	JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6de4d2fd080960344ac8fac697c85556.exe"
1⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3676-0-0x0000000000400000-0x0000000000685000-memory.dmp

Filesize
2.5MB

Download
memory/3676-1-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/3676-2-0x0000000000400000-0x0000000000685000-memory.dmp

Filesize
2.5MB

Download