flawedammyy | a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9c

General

Target

a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Size

720KB
MD5

6bc5c1e1e9b7647b14ee5ffd0f53abd0
SHA1

3c9d020fab99d225a5b269901e226cb3d3c18bb8
SHA256

a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9c
SHA512

6cd0464098b45b6444985e9902070b7dfc3f4228a7d6445ac1e3a949f2b4fa3f9b8045a1d165309406605fec55eb93e248797ef9a076959defdad532626e97de
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\INetCookies	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.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	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe

Modifies data under HKEY_USERS 9 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c6658524c175253a2df6b48fe3eb36b	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = daa81341ae6be7bd6807cda43e8c7d3d10b72df069c4babbb3fdbc0409b154c6c5dada15925c9fbd32fc58dfd4b8090df3872d1b418e84e086f82c1419dfb5b27ca9ea92d71c2529af887a	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1752	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1752	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4848 wrote to memory of 1752	4848	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe	83
PID 4848 wrote to memory of 1752	4848	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe	83
PID 4848 wrote to memory of 1752	4848	a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe	83

C:\Users\Admin\AppData\Local\Temp\a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
"C:\Users\Admin\AppData\Local\Temp\a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2876

C:\Users\Admin\AppData\Local\Temp\a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
"C:\Users\Admin\AppData\Local\Temp\a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Users\Admin\AppData\Local\Temp\a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.exe
  "C:\Users\Admin\AppData\Local\Temp\a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9cN.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:1752

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
865baa4cde7ca006fff00161cb14095c

SHA1
23ce42eedcce0d5f966a1577bca4732bf09644e8

SHA256
8c3f15b069942fc022ba0b80c7916de5080a14f83b83a8ec1e8f484ea7b56aa4

SHA512
1df15fb5beb52429b4fd45356b986163c664362699cec04b29a3f0fddece5db7bf918fcc3502ca9d7281f2032a939e02c35f27b2ef1d042c2baebc5576e7fa17

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
b7ef88c7130181bd8e56eb760ec0ed91

SHA1
bf4a0d170dd5b226458933cfcbdf23e48542116d

SHA256
ebc54ac516f54450f93212bc93c75ef065ae74a0a07b40396e378204b2ec41f3

SHA512
3c3ed5c7e1a9098667f4125d20b42a101519f6b1cbfa79f9719b526a8b80d1e10c393f28ff17f328c5cdbab79988d250aeb05e1aa6a4bf59132770422a241fed

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

Filesize
307B

MD5
6d41ae530d5f0c5531a343fb58a856ba

SHA1
c15b36f055c1cb7b5f743c7123e6a79ebfbb1eb1

SHA256
301fc095cca3f5f1f2449f39871b548cca14f795a556e8c63d319b91df90221f

SHA512
d2b32bdbbe3371db7bcd45d7e0ced6388bab6af5cc065e927de362ed2828c4aa82d1af28c4fedcbdf8b82beedfe0b8666b9bdec970cefe2a7133b0b7797adfda

Download Submit

Analysis

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