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

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-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\International\Geo\Nation	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 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c175253a766ddfd8c02b36b	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = ca50e99e10854bcfdb0c09424d984df0fb8aedb5f595ad69da033f7444168369f770a4eeb741efc8b2e114b26e06741ac151619d3d443f83f8782d727d4ac07db6ab1f372057757eed63f7	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2556	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2556	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2556	3040	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe	31
PID 3040 wrote to memory of 2556	3040	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe	31
PID 3040 wrote to memory of 2556	3040	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe	31
PID 3040 wrote to memory of 2556	3040	JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe	31

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:2904

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:3040
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bc5c1e1e9b7647b14ee5ffd0f53abd0.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:2556

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
3d7bb82f2e8e3d15723c1e3078c94052

SHA1
0ad4b579102e3cb1f0a09087ba0d6a8e9a52f751

SHA256
99b5beb7cd9e329c457b5b5d0319f3bcde94d0b5297fc8a82c4938f36f00f696

SHA512
86fccc6c73d80119ac190f795f65859466cfbd6b2a7d63dd12f1d1ffbbf8e0363bb847d8307c9aeb7c179ce0ce761ef57517b6e750ee174e305a154a8cd9e3db

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
34a1fdf61f06dfbe7f1ed90960411a6b

SHA1
c8f7ae5e53ac50b917b6a905fcb8497a3459106a

SHA256
1f70244db75855329646d79fedc129c37ebb00703b9740255214c340a7f3f02e

SHA512
a393db576335bc6867dc3eb6b652779e40704ca4fa6e779d512c5c44da7b20bc02d1e09dbf379d723c6bef551f4ebb97c1cd111d48ff67fb80dc594cc2ff5107

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

Filesize
307B

MD5
6d41ae530d5f0c5531a343fb58a856ba

SHA1
c15b36f055c1cb7b5f743c7123e6a79ebfbb1eb1

SHA256
301fc095cca3f5f1f2449f39871b548cca14f795a556e8c63d319b91df90221f

SHA512
d2b32bdbbe3371db7bcd45d7e0ced6388bab6af5cc065e927de362ed2828c4aa82d1af28c4fedcbdf8b82beedfe0b8666b9bdec970cefe2a7133b0b7797adfda

Download Submit

Analysis

Sharing