flawedammyy | 7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33

General

Target

7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Size

720KB
MD5

b524424eca8eb35d121f284a50bc2f76
SHA1

e47097b7d1e1338785ab188dedbe40bec22254de
SHA256

7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33
SHA512

a70f9442df6b1645d1b81ad128dad3db114eadc7f58c2bb1198128a0b55078655b8c2cc71f61223aea37961b47342f3b3f3b3a8ceb48c4a67daf488df48dd6e8
SSDEEP

12288:PYdNctvsfu2LVBfKf057C9lRt3i5olGJsxhzVEg4:wdNikfu2hBfK8ilRty5olGJsxd4

Score

10^/10

flawedammyy discovery trojan

Malware Config

Signatures

FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
trojan flawedammyy
Flawedammyy family
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-1-5-21-3533259084-2542256011-65585152-1000\Control Panel\International\Geo\Nation	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

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	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c175253c7ca0794973eb36b	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 070c60ee8343169567ef988a495e2d03fa6ac9801fe805efe701b50817497370376c099527b1f435a49f356530a3d0e07da4530a2ebbbf46d415e5a5409b62974c45f62dbe82770d604c70	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2404	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2404	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2576 wrote to memory of 2404	2576	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	31
PID 2576 wrote to memory of 2404	2576	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	31
PID 2576 wrote to memory of 2404	2576	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	31
PID 2576 wrote to memory of 2404	2576	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	31

C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
"C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1720

C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
"C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2576
- C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
  "C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.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:2404

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
4c28864f4be0db0774d9fb96007aef23

SHA1
b3c47bfa5065175c30c51227de3963bb889c04c3

SHA256
7b1f3f5825c4a3ea96f538002f83d84651fcf832b71182b4e9c8edc954fc972c

SHA512
19f99f3159fa1cae5d72e39300409925f5352fe8e7fd47f27e51ce71b74ea069733b06318606517cba42509fcb8a891d2ec3dfe0b8fa036eacd82bccd5c2376c

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
26c801ebe02f54fd259f5a0b7307104e

SHA1
3ca44e3450c7f4b135aadd34203d1023065b878a

SHA256
3dc24dd87892a1691cbcb20250fc6df06ebcf3cf3c872e0a4d9de522251ef692

SHA512
c527e1433622ed6bcad1b87761dc89f10957d4098fd23b834538a2776115e079f447c989fc80b1c2894a1ac7a3729c335a35c5f1f7c5c76c8f4be83f9edc91b7

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

Filesize
307B

MD5
6d41ae530d5f0c5531a343fb58a856ba

SHA1
c15b36f055c1cb7b5f743c7123e6a79ebfbb1eb1

SHA256
301fc095cca3f5f1f2449f39871b548cca14f795a556e8c63d319b91df90221f

SHA512
d2b32bdbbe3371db7bcd45d7e0ced6388bab6af5cc065e927de362ed2828c4aa82d1af28c4fedcbdf8b82beedfe0b8666b9bdec970cefe2a7133b0b7797adfda

Download Submit

Analysis

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