flawedammyy | 3ae3656938572bd93a2092addd8c4085bc09f106a51f9302bbcec6e7edfa45de

General

Target

1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Size

648KB
MD5

1521fd02bc03bdc7228cf23a4100588d
SHA1

3910f918b78094e2d33fe0685b59c128a1091c10
SHA256

3ae3656938572bd93a2092addd8c4085bc09f106a51f9302bbcec6e7edfa45de
SHA512

d3468b105c822d62bab00c7a9e8e9a4738006f3ea1fffff1017702281461be5dc43cfc3d74354872f47ddfcb984a4f5a36d22ccaed8d7d72dd05c6e7618b2e11
SSDEEP

12288:qaA9OKLSwaIN5U8xvFoRQMEoO2rx8ikfRtjIe9rtv8zl6Oilg6:+kK+waI8JRQMEJ2rufRtse9rtv8zlViz

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

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe

Drops file in System32 directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\A82946818BB0433A7DC1AFD2189B16AF	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\A82946818BB0433A7DC1AFD2189B16AF	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.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	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe

Modifies data under HKEY_USERS 9 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeBackupPrivilege	1588	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Token: SeRestorePrivilege	1588	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Token: SeBackupPrivilege	1588	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
Token: SeRestorePrivilege	1588	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1588	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1588	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4812 wrote to memory of 1588	4812	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe	85
PID 4812 wrote to memory of 1588	4812	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe	85
PID 4812 wrote to memory of 1588	4812	1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4052

C:\Users\Admin\AppData\Local\Temp\1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Users\Admin\AppData\Local\Temp\1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\1521fd02bc03bdc7228cf23a4100588d_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:1588

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

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Downloads

C:\ProgramData\AMMYY\settings.bin

Filesize
88B

MD5
fc3d4242de143796e1504ce3af4ea398

SHA1
57b82ce75222077af97b578e1ea092aaa34d225d

SHA256
7a89dd8d913d002839546861cdb736e21167eee4971c9853dcd591e3da1fee9c

SHA512
1c3cb642365765f5880609c3801c62e828da434c97eb8084338d4629cefcb60411935f5e34f785c8217494ee01803e16eea4086efb6fc49e32d6fdfe342df60e

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Analysis

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