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

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	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	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 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	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 = 537d567366087c6658524c175253235395843a5bb36b	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 7118e990e3c3c91663ef988a495e2d03fa6ac9801fe805efe701b50817497370376c099527b1f435a49f356530a3d0e07da4530a2b1b683529a58c4ddf20f8371de76a27fdc18761fe3b18	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2092	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2092	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3728 wrote to memory of 2092	3728	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe	85
PID 3728 wrote to memory of 2092	3728	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe	85
PID 3728 wrote to memory of 2092	3728	dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe	85

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:4232

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:3728
- C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_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:2092

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

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Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
0ecc9b00a66f55938014cadb444d8e36

SHA1
31043cd684fe3c484ec5a2a755ac7884bcba8e79

SHA256
2b8a6e43551e5a2bd692d4018652601c18672627af21d192870c62f613f840dd

SHA512
1b3c96c205c07680c4724c6b154a783e5cf36f2d8c6e57c3e5d5c1a8418d8609658832eec13a279fa4765752d335da45bc9a6011f0839ebcd849b5e53eddbb20

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
4e19fe12d31ed0cd6c3b78ad7a34236f

SHA1
3ba85f4bfa39ae7c4c683884bc62d61c117ad4a2

SHA256
7dfba5a07b76911cae128d9ac0c1b6bf98929c0b2d58a52248815ce88acb8643

SHA512
6e967c52579b0f8c43281643da28a095e51ee32e3e49896e08a0ef58a09a1a3a9c2142a86a75cd282b11e74b399fa8276c152a8071ee9eab790fafb9fff9ff3e

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

Filesize
307B

MD5
5c37c03f1e741cd4dd29a9005611431a

SHA1
9bab8900ea0b4f38125929fc8ba56ecbed2a7eca

SHA256
042da24183b04eaae4cdefff1186cb0b67f6c39b9fadd01f777314522e311d2c

SHA512
d51b89b7f88a86fc6c4bb04fc29ec503e66d60739ab929555325fb79348d0b12de7c5726bafa94b6af78b7c35c185e8e0a6c8db2696c55fef5fc4cc31576c009

Download Submit

Analysis

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