ammyyadmin | c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d

Analysis

max time kernel
143s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-09-2024 03:22

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General

Target

c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exe
Size

955KB
MD5

6b612287fc44bcfbd0d2ae9ccd994c95
SHA1

b645a4590c175599f122e2546aa2998a3e9dfd58
SHA256

c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d
SHA512

b7737fd2de2e14f47393a3bc89bc1677cad10e4a19f5c3513b8fec05b3b85cb802da7059f97f6b34e819d20be034c51edbc8dc5c08f0a1ccee4b2ffc861b5871
SSDEEP

24576:rMjPJ5g9KVGrdNikfu2hBfK8ilRty5olGJsxi:mJ5gEKNikf3hBfUiWxi

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:

c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exe

Executes dropped EXE 1 IoCs

Processes:

budha.exe

pid process

3412 budha.exe

pid	process
3412	budha.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4556-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\budha.exe	upx
behavioral2/memory/4556-12-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/memory/3412-21-0x0000000000400000-0x000000000040F000-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:

c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exebudha.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	budha.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exe

description	pid	process	target process
PID 4556 wrote to memory of 3412	4556	c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exe	budha.exe
PID 4556 wrote to memory of 3412	4556	c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exe	budha.exe
PID 4556 wrote to memory of 3412	4556	c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exe	budha.exe

C:\Users\Admin\AppData\Local\Temp\c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exe
"C:\Users\Admin\AppData\Local\Temp\c0b351255c840115a53ed773740755870f08253fbd6d4ee104a0cda045cf206d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4556

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:3412

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4420,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8
1⤵
PID:3040

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
956KB

MD5
b7845e91534a90461018856da394d4b7

SHA1
3abfd3444364bd1bcca25dd7bceb443b5fa47be0

SHA256
ec7d6b500a30b6563bcf760f1edf644b9634d1062ed93516f39d7ae433c169c9

SHA512
ecb607862960ca9bfa7481fbb968a407cbcb901d0b4eac098ba90f710547c527d02bbadcdfbde11c37e96e29a18b7b83ea80acb5ce311965484460238ee8ea33

Download Submit
memory/3412-13-0x0000000000550000-0x0000000000551000-memory.dmp

Filesize
4KB

Download
memory/3412-14-0x00000000025A0000-0x00000000029A0000-memory.dmp

Filesize
4.0MB

Download
memory/3412-21-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4556-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4556-1-0x00000000021C0000-0x00000000021C1000-memory.dmp

Filesize
4KB

Download
memory/4556-3-0x00000000025B0000-0x00000000029B0000-memory.dmp

Filesize
4.0MB

Download
memory/4556-12-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download