flawedammyy | cbfb877bb10d53dc56d3f22797fcc113db119f11709025e9ee6d813c42152bb3

General

Target

dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Size

740KB
MD5

dae5ff04f3bf0be753a4c2b5013cc861
SHA1

eaddfbd3aa1e87f2e148e578a293de9e1d3811b0
SHA256

cbfb877bb10d53dc56d3f22797fcc113db119f11709025e9ee6d813c42152bb3
SHA512

3a95366bd63251d3a0b420cc3d2c68d9896519b9faa9d2e8e92a6991c27d27911ef387c1dfed1af35e94089ce09681d912091dac138250b6810ae7bcfc624265
SSDEEP

12288:eNgEvTkYGzXUMA7PTgM0YOg26y4RtcxcUwhqb3omaY807gvPoi:eXTszE7PTgM0YOgA4RtcbwhsSYFk4i

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-1-5-21-1488793075-819845221-1497111674-1000\Control Panel\International\Geo\Nation	dae5ff04f3bf0be753a4c2b5013cc861_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	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c1752538784a2843a5bb36b	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 616adf41cd040eeb5f5c889205a60b08fcbcbc98a4806bb5eed9ee59357953e478cdfff5854e0754feab79243463b42e92904cea97e3020875f7d1d6338268c2483edd60b9a0b0ad2241ff	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2056	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2056	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 804 wrote to memory of 2056	804	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe	32
PID 804 wrote to memory of 2056	804	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe	32
PID 804 wrote to memory of 2056	804	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe	32
PID 804 wrote to memory of 2056	804	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2328

C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:804
- C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2056

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

Replay Monitor

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Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
6d5b8fe2cd21668753eecb9fee219de4

SHA1
a193fa50faf9162bddb7b1c69ad0cd40baf7ec24

SHA256
076e26ae9b0781b317e84076472adc0640135bdeb6d6a09de63cdad4184a8020

SHA512
77184f3b85657b9846c39bd4fc20f1f22af4ab1951af48f44874db393763d12d99b261053354e1410bd3859afcfd47e44936abc82bf6f8a5bbe33dc34dba8925

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
62247fce46dfdb79f5cb9f462b528be2

SHA1
169b3cda88a7849b59be0751edd39c612c38bb8c

SHA256
6679fdc9ad8f0daf435d5c6cdd71396979092e68a729e5ba91381426d0194c6c

SHA512
f163d318c586cd8cff234e089e127ef84e9d170432a29a3bb93e7e34f0eddd5ccebe1781eb992dcf8c66f1be2d17d3a5535ef963f8e7366904f641f5aaba3a4c

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

Filesize
307B

MD5
5c37c03f1e741cd4dd29a9005611431a

SHA1
9bab8900ea0b4f38125929fc8ba56ecbed2a7eca

SHA256
042da24183b04eaae4cdefff1186cb0b67f6c39b9fadd01f777314522e311d2c

SHA512
d51b89b7f88a86fc6c4bb04fc29ec503e66d60739ab929555325fb79348d0b12de7c5726bafa94b6af78b7c35c185e8e0a6c8db2696c55fef5fc4cc31576c009

Download Submit

Analysis

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