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-1-5-21-4177215427-74451935-3209572229-1000\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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c175253a7505978a83eb36b	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = ca71f88ffc799cf82861c1d2c3c1e3ef3f001d3d8593e5b953ab167d8442353b5ee87074782276eb3bf96bdb24fc6c8e99a1bb9b6c7e9ea85361fac79ce83859ccb206f7a6db851ed8a834	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

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2392	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2392	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 2392	2096	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	31
PID 2096 wrote to memory of 2392	2096	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	31
PID 2096 wrote to memory of 2392	2096	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	31
PID 2096 wrote to memory of 2392	2096	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:2396

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:2096
- 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:2392

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
58ecdb80779859e30ad75d2283e6e269

SHA1
8e9b034152d93323161ce537dc35f4a24cf47002

SHA256
855496d3a27f0857719c4d12593945deb61b71b582187f6f6ccda951f3eb9297

SHA512
483a854f308165f63c4c520687c91810c2cdaada5c405a4adcce2e1a2e5dc2bded01c19be9f7d8f2e5b44fce0b490e06055cd9a8ae3383a393c7972285352a0c

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
3c7f3de50a3759af64687fc0ae8953cf

SHA1
bcbe2df61b7b77d8cb8ee8c2ca4d6f85f3bd8faf

SHA256
17f66d59702a84eca3b5d2718185b36fc0b26f21f8f41bd119a091e827c7884b

SHA512
18fd5dc74d58f64b502c3b70a70826a4095d5ef0034547ecf3e0a4b8d47ad9e1e5c39f9475708a859ecd3c143d346a3cc74e3e54aa6be87219d4ac5b80e4226d

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

Filesize
307B

MD5
6d41ae530d5f0c5531a343fb58a856ba

SHA1
c15b36f055c1cb7b5f743c7123e6a79ebfbb1eb1

SHA256
301fc095cca3f5f1f2449f39871b548cca14f795a556e8c63d319b91df90221f

SHA512
d2b32bdbbe3371db7bcd45d7e0ced6388bab6af5cc065e927de362ed2828c4aa82d1af28c4fedcbdf8b82beedfe0b8666b9bdec970cefe2a7133b0b7797adfda

Download Submit

Analysis

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