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

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-1-5-21-3551809350-4263495960-1443967649-1000\Control Panel\International\Geo\Nation	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 6 IoCs

description	ioc	Process
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 = 537d567366087c695f594c165453078df9dbce03b36b	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = c3981f6642f6dfd382e6f6f1e78adb984aa14c1adb8dbdb34718a6f162586332a26f4fb0917f6e7472d0095a844de98d909f3c3056165cee23b43f818881cd70da70980a	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2440	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2440	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2440	2488	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe	32
PID 2488 wrote to memory of 2440	2488	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe	32
PID 2488 wrote to memory of 2440	2488	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe	32
PID 2488 wrote to memory of 2440	2488	JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe	32

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:2944

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:2488
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60597829cac84b6e44e6b5608bad1e90.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:2440

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
9f38364d2b1855d6b547da185d86f493

SHA1
30188f968a762f8a128cafb271ee487c2055d273

SHA256
118c46da26cad218ee1f41536d106d121195b4d065710b9694ba70ae7c5bddf0

SHA512
9b7318c6e4ae94a3c28c5eec35e1961cf12164b2550f940a33d1775e530bdb9ee5a6f4be1fcbfdd3cc64bbf3ac9ae400fc2aff60b9d39e19686e513921a151a0

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
b95198fcf49254f90c6f0b12ddf3d7ee

SHA1
451d1e6373befd16ec77a884eb7355739be15347

SHA256
10a7f26ccee965b92155df117df0237523dc895d7e904398973d87a2d98e2151

SHA512
638d9a81ceb55e8bd554094947c74e599c78dbf032fd738214882e8c4eb66cb3fdc1b4e956d657e222cc7241e93be86029b56a88e3d3d79bef9a3213e90e2b02

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

Filesize
271B

MD5
4cb889e527b0d0781a17f6c2dd968129

SHA1
6a6a55cd5604370660f1c1ad1025195169be8978

SHA256
2658cd46dd49335e739cafa31ff2ec63f3315b65ecc171a0f7612713d3ac702b

SHA512
297d2c05d2ac950faeb519d3e7bc56ea9d9fcab65b5dfdbba2720be8eddc8b2d5ead3dc7c122b82d6937be6c2d7bb88872dd7b80961138571245fba381daac3f

Download Submit

Analysis

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