flawedammyy | a6f814b525fbedec982f569c29d67cb11fb232ae5951eba4ecb6f62a2eeefb9c

General

Target

JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.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\History\History.IE5	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.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	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe

Modifies data under HKEY_USERS 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = b50b825c51a18b6671d16d5780adda6ef563dd82ea4299405a8708463d4566dd5014ed143cbc7ee1312f56c6dd54688319ed01497df5aa5a5adde97f5aa2ae8bbcddf0a3524bf0c74a0193	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c6658524c175253a6a5ecfc8c02b36b	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4708	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4708	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1012 wrote to memory of 4708	1012	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe	83
PID 1012 wrote to memory of 4708	1012	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe	83
PID 1012 wrote to memory of 4708	1012	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe	83

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2656

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1012
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.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:4708

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

Loading Replay Monitor...

Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
afcd020a6d2803ce1d552f9627bb5a25

SHA1
5b955d3f4d56c6742f77063a3019af73207b7e18

SHA256
b3ead8490f07847901ae7f81bd0aeea3947f53811320c688448b1f51cb01c6e8

SHA512
1c6a2130e0dfaad61fef7a80a46cff66cc6368c1b3ff5b3f20d9f5e1f29664da8c9f93a3992debeed36dbb4ca92c558c073a02c29546b84c92154b6443305f5e

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
cfb0e90eaa2538f938d0c87efcaedada

SHA1
44bdd32eb0c702a79d43b67a1f68523229266fb6

SHA256
9a147f20f6e1e844133717de6bec7ae935115b66173c624f15fe95d3e2a57187

SHA512
ce1d8ceb6aca5fdf57ab6dee85be1ced215015e2c218c77654a7b3561e20056329cc74d97cdf8371adbc4eeeb3a9890f1c2fa3266a3c04c3e0220f275858921b

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

Filesize
307B

MD5
6d41ae530d5f0c5531a343fb58a856ba

SHA1
c15b36f055c1cb7b5f743c7123e6a79ebfbb1eb1

SHA256
301fc095cca3f5f1f2449f39871b548cca14f795a556e8c63d319b91df90221f

SHA512
d2b32bdbbe3371db7bcd45d7e0ced6388bab6af5cc065e927de362ed2828c4aa82d1af28c4fedcbdf8b82beedfe0b8666b9bdec970cefe2a7133b0b7797adfda

Download Submit

Analysis

Sharing