flawedammyy | ee4fad528992868087d6842e08ee1cf51b6e40f27d5d7a663dbb639ad94f8f95

General

Target

JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Size

747KB
MD5

60597829cac84b6e44e6b5608bad1e90
SHA1

45d990dc27a24806a5358b5aa99bf0f6e34bd230
SHA256

ee4fad528992868087d6842e08ee1cf51b6e40f27d5d7a663dbb639ad94f8f95
SHA512

2c99cdab0c6935337ae3fe8db16d45ee071b84bc30421c19cdf187d139272cb57d8c36d6af791ed2c414775d4554007a21d1d8347095477c9c67cc1f3ca7cf79
SSDEEP

12288:8YdNctvsfu2LVBfKf057C9lRt3i5olGJsxhzagMG:HdNikfu2hBfK8ilRty5olGJsxNMG

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	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.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_60597829cac84b6e44e6b5608bad1e90.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.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_60597829cac84b6e44e6b5608bad1e90.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c6658524c175253927aecdace03b36b	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 3891164c1df7377fad43bf60ffa9b59e9fe8c5cf49fdc8a7ed86974363c26dcfc33f0596e3dd408de4b0f011c839b06f167c74583869dba21b26c34a890479e8e841a2a77bbb6cac8806d9	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3964	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3964	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3140 wrote to memory of 3964	3140	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe	84
PID 3140 wrote to memory of 3964	3140	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe	84
PID 3140 wrote to memory of 3964	3140	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe	84

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4936

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3140
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.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:3964

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
ae834f3678084f5a0d3114bf1f5f2cbe

SHA1
c15452798e3e2170b4a69018667b355790fc5afd

SHA256
248dd3a6ea4312691bcbe8bbe9dde60d0478f43ec178361d9e3f9cc0b651f505

SHA512
90d35bbb3ad30183dfe1605313932423964bce45ea868167f92af0daa537726fba0757dbd86cdb028319a046bd6b25de22fb91a2cd245557d6df4254cba694ed

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
e1b0c0852fc033c0133574035b24ceba

SHA1
048bd27248dc8e0ecea3fef435123dfb22de2ad3

SHA256
079b5ce8412948968a16c37a17546712ecbd2133cef71f68fe739f9cb9521d76

SHA512
1c1381b6ca89bf3a1819ec8a737a7c90dcb2ca06a274434aa527f5aeab5d323da2e860bc973347a0ac37386ce3da8914c979061ac3b71f4e3af740482df7d548

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

Filesize
271B

MD5
4cb889e527b0d0781a17f6c2dd968129

SHA1
6a6a55cd5604370660f1c1ad1025195169be8978

SHA256
2658cd46dd49335e739cafa31ff2ec63f3315b65ecc171a0f7612713d3ac702b

SHA512
297d2c05d2ac950faeb519d3e7bc56ea9d9fcab65b5dfdbba2720be8eddc8b2d5ead3dc7c122b82d6937be6c2d7bb88872dd7b80961138571245fba381daac3f

Download Submit

Analysis

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