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

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	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 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c6658524c1752535e9c2816e51db36b	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = d88d65561c89acfefb6c0c6d37a039eaf72debdc3cd30d2b196fef60b391126eb5750a679d9117743588d8e87611288ac7136f863c44ca527dda91db6beb384782fb2fcc8ce44eb28e3f5b	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2676	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2676	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 116 wrote to memory of 2676	116	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe	83
PID 116 wrote to memory of 2676	116	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe	83
PID 116 wrote to memory of 2676	116	b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe	83

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:5032

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:116
- C:\Users\Admin\AppData\Local\Temp\b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\b3cd481ab5d2cba65b0318df5a6ed582_JaffaCakes118.exe"
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
2e9cbfc9eabda2e9bf4097ef48d56dc6

SHA1
4a5211e761e0f5d14b05fbbb97f066ed84323208

SHA256
04450be5d6f755f6c28ef75ba47c7c2c143ecb732167e75827350a46abad37df

SHA512
237a3c67de3a9cd418f13825f94cef319e837f670dd333f05f3fc30100739f9ff1ee718de9270299a9e48c0c2afe7055b0fbe3a19e9d27b3ac41f5cac920171a

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
15b00e79c1f7f7b303136c34f000f132

SHA1
d486a22584754417434a256faf246721a64e9a37

SHA256
57abcf31bd6687d79641a21753474dd3170d845fbd99723a45c378a2153e788e

SHA512
b48eecaecd88af33b591527cfe232c8a85476efcd0eb033e2a3671c4c975fb6083b83c90bbc6e543f2a1e0805fe64e87fcaaa1e606afb10d505b1bd48ce39123

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

Filesize
283B

MD5
c4f363e5d5033a0ba0209333d56c4bff

SHA1
954dc745edf1e351bc233eebbe5a1c640d6ab92b

SHA256
47a20a1e931485993579d3fb6f7f7389bcefc99c0354fcd3a76d42e564ab8882

SHA512
35c0e50a3854fe5ee87699587ce9d6dac9581f8031ccfad9ecdedc220fdf8378926104c7a3579420d1fd2c0b1d5c651b322d53d27189608ef76c3c54bde3a69f

Download Submit

Analysis

Sharing