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

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	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 9 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c6658524c175253d54bf294973eb36b	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 9f84c3eccd3c1bd13ab057389971ee6fe7b1a336b5cb44559e73659adbcb2bef3340f47abdae33cf7fc5480bfa46cefb242d91b4eeb740d5d20ac22c4acec6873dd2fef8e4ed99bce06a27	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2528	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2528	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3152 wrote to memory of 2528	3152	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	84
PID 3152 wrote to memory of 2528	3152	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	84
PID 3152 wrote to memory of 2528	3152	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	84

C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
"C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:208

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:3152
- C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
  "C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe"
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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
deb0fa18c3f2ffc22d351dafd2a88301

SHA1
a40e65f363f66c6115f732c2acc95074efa8962d

SHA256
fb57fb39ce5b7725ee41b8d4560009def435d9a80b52353faf06faa108c06bcd

SHA512
f0b41bd8a878692c7e644407269ee417d6b7b5f5c1549a5152440fd6f9e655328dc1de263e46538b2af0a8a50cbc07eb76b20f1485f3ebba59475b0581e12bf7

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
b42cb0e99ff954c13b909fe403739681

SHA1
8c0a44f08294ea1fc8d0392a1a9dcfbbbc96032f

SHA256
bc97dcfacd9d490884b2594881cc04c33a60e2029f4635719d3fd318e9163090

SHA512
6bc616d18aaebbdbcbb6b71ed578705049b179997eb15c772f39f83570c3429343db4d88c9e82a6c34d26c6e6a4f58f2c075cf920b0265f675aeb1f1f7524dfd

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

Filesize
307B

MD5
6d41ae530d5f0c5531a343fb58a856ba

SHA1
c15b36f055c1cb7b5f743c7123e6a79ebfbb1eb1

SHA256
301fc095cca3f5f1f2449f39871b548cca14f795a556e8c63d319b91df90221f

SHA512
d2b32bdbbe3371db7bcd45d7e0ced6388bab6af5cc065e927de362ed2828c4aa82d1af28c4fedcbdf8b82beedfe0b8666b9bdec970cefe2a7133b0b7797adfda

Download Submit

Analysis

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