ammyyadmin | aaac43e0292df694407da2c0618da9593a363ed5a7a59d854c128cdb26208b0c

Analysis

max time kernel
94s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03-08-2024 20:18

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General

Target

d3ab12894e95093c60a28b62ca078cb0N.exe
Size

976KB
MD5

d3ab12894e95093c60a28b62ca078cb0
SHA1

f3066e03492879616290ff066c77b1e6f621ae69
SHA256

aaac43e0292df694407da2c0618da9593a363ed5a7a59d854c128cdb26208b0c
SHA512

a65561f38ed3239dd8af492cdef45929971d705aa0368a39c683fa6829b5d43eec65bad1be53a11a278c8f84cccba0947f6c0a01dbe0123e859d3785b907b8a5
SSDEEP

24576:+MjPJ5g9KVGrdNikfu2hBfK8ilRty5olGJsx1:7J5gEKNikf3hBfUiWx1

Score

10^/10

ammyyadmin discovery rat upx

Malware Config

Signatures

Ammyy Admin
Remote admin tool with various capabilities.
rat ammyyadmin

AmmyyAdmin payload 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002347b-7.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	d3ab12894e95093c60a28b62ca078cb0N.exe

Executes dropped EXE 1 IoCs

pid	Process
2256	budha.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/820-0-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/files/0x000900000002347b-7.dat	upx
behavioral2/memory/2256-12-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/memory/820-11-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/memory/2256-15-0x0000000000400000-0x0000000000410000-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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d3ab12894e95093c60a28b62ca078cb0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	budha.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 820 wrote to memory of 2256	820	d3ab12894e95093c60a28b62ca078cb0N.exe	86
PID 820 wrote to memory of 2256	820	d3ab12894e95093c60a28b62ca078cb0N.exe	86
PID 820 wrote to memory of 2256	820	d3ab12894e95093c60a28b62ca078cb0N.exe	86

C:\Users\Admin\AppData\Local\Temp\d3ab12894e95093c60a28b62ca078cb0N.exe
"C:\Users\Admin\AppData\Local\Temp\d3ab12894e95093c60a28b62ca078cb0N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:820
- 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:2256

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

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Downloads

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

Filesize
976KB

MD5
2bbcd3e571720ca210ec6f502883cadc

SHA1
07a81bac275162e511db8cfa5e8834e6f3eab1a0

SHA256
103c5936135c6b7143b35734f49f7359cd8f1160ec7637bcccd7c1c881594469

SHA512
ba94cc7033cb5603d3ebf16b803dd5e038ecf531858510e14d622d0aa9a94da8632d2ff7355aeb75c7212d5aa3aac41c9060cf9af4a77a8173871dcc96d43a17

Download Submit
memory/820-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/820-1-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/820-3-0x0000000002600000-0x0000000002A00000-memory.dmp

Filesize
4.0MB

Download
memory/820-11-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2256-12-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2256-14-0x00000000025B0000-0x00000000029B0000-memory.dmp

Filesize
4.0MB

Download
memory/2256-13-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download
memory/2256-15-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download