flawedammyy | 47fc82320114cf2d2536acb931dc4dd8f83237b344b130780752c705af1a0e61

General

Target

b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Size

740KB
MD5

b3cd481ab5d2cba65b0318df5a6ed582
SHA1

2e04afbbf9e4cbaabd3fab2c6a35d8885229d74c
SHA256

47fc82320114cf2d2536acb931dc4dd8f83237b344b130780752c705af1a0e61
SHA512

45278999127ded36b05e0027a61036cf465233d918471694f570a61ae93367e1c7af3ca3f201c6bc9a958ee65fcacf83fd864e0f623f1fd4625d4ea8b3458bd3
SSDEEP

12288:1UYpJqMH2OwlaUPcWWw5XZV8f64RteVpN5ETMasTjsgvP34:tpJJWOwlaUPcWWwRZb4Rt+N5WMasHh4

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-1-5-21-312935884-697965778-3955649944-1000\Control Panel\International\Geo\Nation	b3cd481ab5d2cba65b0318df5a6ed582_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	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c17525327248917e51db36b	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 335fcaa3bdcd80a9a18f4dcc8e237863b9cdc2556f3512968a3d12613e1064610bedb09442e7f366bfe37e5b17b3cd37407e570627eec590f9e6b4ca013fa9cecd5c90146af90a8ef29210	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2072	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2072	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2072	1628	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2072	1628	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2072	1628	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe	31
PID 1628 wrote to memory of 2072	1628	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2512

C:\Users\Admin\AppData\Local\Temp\b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Users\Admin\AppData\Local\Temp\b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\b3cd481ab5d2cba65b0318df5a6ed582_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:2072

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
79d9d8ed1e636584bf1bc77b90e6d070

SHA1
d440fe40c0d8f9815f6a336b7195b73e477f5ca9

SHA256
33d637faaaa8dd224251089f8fde5549948430037a365a89c1250ceec7a8c38d

SHA512
b9f9c87ac753d5e8a990116d002efa7f75a387dece0f1286d359348039c307fc43c770e4bc361ac8f1ce047fb9a2861f7aee9d826b520e9ca2746af7a20e15e8

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
928aa062b4ef5f6805f93b51a6a111ae

SHA1
d7b19a9c6d109e7e0539f3f9e4847723c363e4f1

SHA256
87078723147b0d25f6343e86b0fc30d1c9e219640fb5279214cd94c4b6722681

SHA512
a904aeac60844e53e914afbbb1494aa1c0009fb71c92ede567f33c99bf980040aea36243fece4fcae3e9fa70781084e785c93a2e688260b56f59b289252b1988

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

Filesize
283B

MD5
c4f363e5d5033a0ba0209333d56c4bff

SHA1
954dc745edf1e351bc233eebbe5a1c640d6ab92b

SHA256
47a20a1e931485993579d3fb6f7f7389bcefc99c0354fcd3a76d42e564ab8882

SHA512
35c0e50a3854fe5ee87699587ce9d6dac9581f8031ccfad9ecdedc220fdf8378926104c7a3579420d1fd2c0b1d5c651b322d53d27189608ef76c3c54bde3a69f

Download Submit

Analysis

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