ammyyadmin | b29d4f97b9274450f159bd7e712738814b6643140be3ecb8e37a4c3aaec9354c

General

Target

1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Size

330KB
MD5

1954f7c5cf2ed21665937051cdb8b9d4
SHA1

37b324eb046260d19fa038b6829a06aa5ae73af8
SHA256

b29d4f97b9274450f159bd7e712738814b6643140be3ecb8e37a4c3aaec9354c
SHA512

bec30d6156da8b0e04a8831057eeb3d208e4385ee9d917d6c11a46eeac7e2e2b53502b10395e6d295caf5732d62a881d006e6f076e6ce653647eee5f8d57df80
SSDEEP

6144:ANuIJXtgwj5YkigHnoAlBKeUHM9V0WGqfiK6vRuTFzHteF2MmH0q/LTgv:AoI13j5YkdBKpHCBLiK+uTFzHteXmvjY

Score

10^/10

ammyyadmin flawedammyy discovery rat trojan upx

Malware Config

Signatures

Ammyy Admin
Remote admin tool with various capabilities.
rat ammyyadmin

AmmyyAdmin payload 3 IoCs

resource	yara_rule
behavioral1/memory/1508-7-0x0000000000400000-0x00000000004C3000-memory.dmp	family_ammyyadmin
behavioral1/memory/2704-5-0x0000000000400000-0x00000000004C3000-memory.dmp	family_ammyyadmin
behavioral1/memory/2808-12-0x0000000000400000-0x00000000004C3000-memory.dmp	family_ammyyadmin

FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
trojan flawedammyy

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-1-5-21-3551809350-4263495960-1443967649-1000\Control Panel\International\Geo\Nation	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1508-0-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral1/memory/1508-7-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral1/memory/2704-5-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral1/memory/2808-12-0x0000000000400000-0x00000000004C3000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 3 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	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = a3db681464d418ec0be4e978859d469465e10366a57d7537e97e2cdfb4e925ac447106316002c90a2fc8163a0a8e9d559d4a00d3d355c6295e130297c86aa16e3c5e1601	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c695f594c165453579052d56b47b36b	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2808	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2808	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2808	2704	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe	31
PID 2704 wrote to memory of 2808	2704	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe	31
PID 2704 wrote to memory of 2808	2704	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe	31
PID 2704 wrote to memory of 2808	2704	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1508

C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
1085abaedb36b4b648773116cc68382f

SHA1
1cd3239ed11568b30bb9a3f0cb1718a433293795

SHA256
7c84603a3a4af06e5515f71e853221e963eaf11c8b217906bf28478752687b1f

SHA512
57fa52bc64eb7bbf406f69f72fd6d8563324cb5020403df9a0bd9745dc76bcdb221bd176727ab75b87d97b73cc89a4781b8ef3cec2b13e72109b3e076fa20f70

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
4d6fd5d79590e9f2f5b065bff4c8caca

SHA1
9536a0e198c8fc08ad2e65e620a508c9ea8c753c

SHA256
8c6190a06e0c5617b8862b5c8f35745cbfdb02c406b0ed6fe8718a5c26fefd48

SHA512
c9e0902ccff80eb75639d039d180c205bb8360112b1905e3ce6093603696e5772eba184363e096fa87b831af2352b6dd4a9d7004c6f74c695503b241e02dbccf

Download Submit
C:\ProgramData\AMMYY\settings3.bin

Filesize
269B

MD5
a55567fceb74f9ca4f151f4ab84b68c7

SHA1
63b4a57b258e640b165732dbcd0ca00fc69b4c8b

SHA256
f649823939d0bf2b01f5c785e55d3e278c1ee7cc11b547c6644ac9f90996e9d7

SHA512
3cbeb788c068008bdf2c7c19b696d464e66f66a969164cf98793e3150cf5ff82822de41deabb79921cbfcc93897ee824872c64a7bd9e131b1304105cad0f010f

Download Submit
memory/1508-0-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1508-7-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2704-5-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2808-12-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download

Analysis

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