Malware Analysis Report

2024-10-16 05:08

Sample ID 240911-wc75zsvakf
Target dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118
SHA256 cbfb877bb10d53dc56d3f22797fcc113db119f11709025e9ee6d813c42152bb3
Tags
flawedammyy discovery trojan ammyyadmin
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

cbfb877bb10d53dc56d3f22797fcc113db119f11709025e9ee6d813c42152bb3

Threat Level: Known bad

The file dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

flawedammyy discovery trojan ammyyadmin

FlawedAmmyy RAT

AmmyyAdmin payload

Ammyyadmin family

Checks computer location settings

Drops file in System32 directory

System Location Discovery: System Language Discovery

Unsigned PE

Modifies data under HKEY_USERS

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-11 17:47

Signatures

AmmyyAdmin payload

Description Indicator Process Target
N/A N/A N/A N/A

Ammyyadmin family

ammyyadmin

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-11 17:47

Reported

2024-09-11 17:50

Platform

win7-20240903-en

Max time kernel

150s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe"

Signatures

FlawedAmmyy RAT

trojan flawedammyy

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c1752538784a2843a5bb36b C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 616adf41cd040eeb5f5c889205a60b08fcbcbc98a4806bb5eed9ee59357953e478cdfff5854e0754feab79243463b42e92904cea97e3020875f7d1d6338268c2483edd60b9a0b0ad2241ff C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe" -service -lunch

C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 rl.ammyy.com udp
NL 188.42.129.148:80 rl.ammyy.com tcp
DE 136.243.104.235:443 tcp

Files

C:\ProgramData\AMMYY\settings3.bin

MD5 5c37c03f1e741cd4dd29a9005611431a
SHA1 9bab8900ea0b4f38125929fc8ba56ecbed2a7eca
SHA256 042da24183b04eaae4cdefff1186cb0b67f6c39b9fadd01f777314522e311d2c
SHA512 d51b89b7f88a86fc6c4bb04fc29ec503e66d60739ab929555325fb79348d0b12de7c5726bafa94b6af78b7c35c185e8e0a6c8db2696c55fef5fc4cc31576c009

C:\ProgramData\AMMYY\hr

MD5 6d5b8fe2cd21668753eecb9fee219de4
SHA1 a193fa50faf9162bddb7b1c69ad0cd40baf7ec24
SHA256 076e26ae9b0781b317e84076472adc0640135bdeb6d6a09de63cdad4184a8020
SHA512 77184f3b85657b9846c39bd4fc20f1f22af4ab1951af48f44874db393763d12d99b261053354e1410bd3859afcfd47e44936abc82bf6f8a5bbe33dc34dba8925

C:\ProgramData\AMMYY\hr3

MD5 62247fce46dfdb79f5cb9f462b528be2
SHA1 169b3cda88a7849b59be0751edd39c612c38bb8c
SHA256 6679fdc9ad8f0daf435d5c6cdd71396979092e68a729e5ba91381426d0194c6c
SHA512 f163d318c586cd8cff234e089e127ef84e9d170432a29a3bb93e7e34f0eddd5ccebe1781eb992dcf8c66f1be2d17d3a5535ef963f8e7366904f641f5aaba3a4c

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-11 17:47

Reported

2024-09-11 17:50

Platform

win10v2004-20240802-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe"

Signatures

FlawedAmmyy RAT

trojan flawedammyy

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Ammyy C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c6658524c175253235395843a5bb36b C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 7118e990e3c3c91663ef988a495e2d03fa6ac9801fe805efe701b50817497370376c099527b1f435a49f356530a3d0e07da4530a2b1b683529a58c4ddf20f8371de76a27fdc18761fe3b18 C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe" -service -lunch

C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\dae5ff04f3bf0be753a4c2b5013cc861_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 rl.ammyy.com udp
NL 188.42.129.148:80 rl.ammyy.com tcp
DE 136.243.104.235:443 tcp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 148.129.42.188.in-addr.arpa udp
US 8.8.8.8:53 235.104.243.136.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
IE 52.111.236.23:443 tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

C:\ProgramData\AMMYY\settings3.bin

MD5 5c37c03f1e741cd4dd29a9005611431a
SHA1 9bab8900ea0b4f38125929fc8ba56ecbed2a7eca
SHA256 042da24183b04eaae4cdefff1186cb0b67f6c39b9fadd01f777314522e311d2c
SHA512 d51b89b7f88a86fc6c4bb04fc29ec503e66d60739ab929555325fb79348d0b12de7c5726bafa94b6af78b7c35c185e8e0a6c8db2696c55fef5fc4cc31576c009

C:\ProgramData\AMMYY\hr

MD5 0ecc9b00a66f55938014cadb444d8e36
SHA1 31043cd684fe3c484ec5a2a755ac7884bcba8e79
SHA256 2b8a6e43551e5a2bd692d4018652601c18672627af21d192870c62f613f840dd
SHA512 1b3c96c205c07680c4724c6b154a783e5cf36f2d8c6e57c3e5d5c1a8418d8609658832eec13a279fa4765752d335da45bc9a6011f0839ebcd849b5e53eddbb20

C:\ProgramData\AMMYY\hr3

MD5 4e19fe12d31ed0cd6c3b78ad7a34236f
SHA1 3ba85f4bfa39ae7c4c683884bc62d61c117ad4a2
SHA256 7dfba5a07b76911cae128d9ac0c1b6bf98929c0b2d58a52248815ce88acb8643
SHA512 6e967c52579b0f8c43281643da28a095e51ee32e3e49896e08a0ef58a09a1a3a9c2142a86a75cd282b11e74b399fa8276c152a8071ee9eab790fafb9fff9ff3e