ammyyadmin | 744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12-08-2024 21:50

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General

Target

744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exe
Size

995KB
MD5

9a29b9313c28c155be35fdef41858034
SHA1

28598ff9830ebc4fb51aa68d997deef1aa879038
SHA256

744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c
SHA512

bd6fa2a6300cd287ac33676f66cd0dc668d4406a2d35b2ddbe87458f3edf18bdfd560cabe073a3203f4832d290aebee874aa9d5fb7caf19936fe1142d802dab7
SSDEEP

24576:rMjPJ5g9KVGrdNikfu2hBfK8ilRty5olGJsxv:mJ5gEKNikf3hBfUiWxv

Score

10^/10

ammyyadmin discovery rat upx

Malware Config

Signatures

Ammyy Admin
Remote admin tool with various capabilities.
rat ammyyadmin

AmmyyAdmin payload 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\budha.exe	family_ammyyadmin

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exe

Executes dropped EXE 1 IoCs

Processes:

budha.exe

pid process

4856 budha.exe

pid	process
4856	budha.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4632-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\budha.exe	upx
behavioral2/memory/4856-11-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/memory/4632-13-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/memory/4856-24-0x0000000000400000-0x000000000040F000-memory.dmp	upx

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

Processes:

744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exebudha.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	budha.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exe

description	pid	process	target process
PID 4632 wrote to memory of 4856	4632	744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exe	budha.exe
PID 4632 wrote to memory of 4856	4632	744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exe	budha.exe
PID 4632 wrote to memory of 4856	4632	744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exe	budha.exe

C:\Users\Admin\AppData\Local\Temp\744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exe
"C:\Users\Admin\AppData\Local\Temp\744b8b6be56fd19f91c2855251f7e03f04842fad14d1070cad9cd3aa3e14561c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4632

C:\Users\Admin\AppData\Local\Temp\budha.exe
"C:\Users\Admin\AppData\Local\Temp\budha.exe"
2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\budha.exe

Filesize
996KB

MD5
33241c6a58104aad1c714f119434a2ac

SHA1
4483f31515cfa8b70f80ca7adfb041a630620443

SHA256
6aa8e6a5fe888fe6bd3e3de33c970d6ca2e65d69eafa983f5db7c82717e3627e

SHA512
8186fcea5d4e24a75c85bab9085b907e5c8aea3f091636acc63e0bf190ee9f8ed1c548b7fdfa793c431e64ebf8ca86f749d3b863a01451dd88d5d426b047a6ec

Download Submit
memory/4632-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4632-1-0x00000000023A0000-0x00000000023A1000-memory.dmp

Filesize
4KB

Download
memory/4632-3-0x00000000026F0000-0x0000000002AF0000-memory.dmp

Filesize
4.0MB

Download
memory/4632-13-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4856-11-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4856-15-0x0000000002590000-0x0000000002990000-memory.dmp

Filesize
4.0MB

Download
memory/4856-14-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/4856-24-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download