flawedammyy | bca57f1b02cb2521fbcbb1f36f99dc2e47ec6df6bc88f24ec000b96c0f032592

Analysis

max time kernel
150s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-10-2024 13:08

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General

Target

3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Size

768KB
MD5

3a2e6d51b199bb631eea59c8cac27902
SHA1

18dc174c9a25f5dcf1777cfeed0e97b5c5f7eb4c
SHA256

bca57f1b02cb2521fbcbb1f36f99dc2e47ec6df6bc88f24ec000b96c0f032592
SHA512

662c75d6964317b8bb7d451a543f3da28e134d22dd558f677c3d357e413e243efe775a6ba562071257d07e8318569bd751d08100f5353b9821ed7d2bccefc6d5
SSDEEP

12288:jXe1Z2fJipMHEgSeA6M7kmchJGvRuORtcE9qTpy+Yg0HkV+UgWRDkj9tyTEAjRc0:ztkmHEgSewkmchJGsORtn9qT8+Yg03ZU

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
48	1440	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1440	rundll32.exe

Drops file in System32 directory 14 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\A82946818BB0433A7DC1AFD2189B16AF	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\A82946818BB0433A7DC1AFD2189B16AF	3a2e6d51b199bb631eea59c8cac27902_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	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe

Modifies data under HKEY_USERS 14 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 66cf3269252c7cdf122ad98140a2855f093996ec0dc28435f6581e5af92a970c26b16dc69e68629676c3502afe00b6e180b244d38e3b4abababe5b2faec5a836900be4fc51fe581a2363f5	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe
1440	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeLockMemoryPrivilege	1440	rundll32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2164	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2164	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 2164	4940	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe	84
PID 4940 wrote to memory of 2164	4940	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe	84
PID 4940 wrote to memory of 2164	4940	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe	84
PID 2164 wrote to memory of 1440	2164	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe	90
PID 2164 wrote to memory of 1440	2164	3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe	90

C:\Users\Admin\AppData\Local\Temp\3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:3620

C:\Users\Admin\AppData\Local\Temp\3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4940
- C:\Users\Admin\AppData\Local\Temp\3a2e6d51b199bb631eea59c8cac27902_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\3a2e6d51b199bb631eea59c8cac27902_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
  - Suspicious use of WriteProcessMemory
  PID:2164
- - C:\Windows\SYSTEM32\rundll32.exe
    rundll32.exe "C:\ProgramData\AMMYY\aa_nts.dll",run
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\AMMYY\aa_nts.dll

Filesize
902KB

MD5
480a66902e6e7cdafaa6711e8697ff8c

SHA1
6ac730962e7c1dba9e2ecc5733a506544f3c8d11

SHA256
7eaaaa6010bbcd6bb8c9ad08d4b0966c7aedc9b2ac24758f170012ac36e508b5

SHA512
7d010cd47b7d1adf66f9c97afc6c3805997aa5c7cc6ff13eddee81f24cf2b95a3fe375ec5b3d6185c0bc8840b4ad91ae143c73a39af26391cc182ab6a1793ba5

Download Submit
C:\ProgramData\AMMYY\aa_nts.log

Filesize
4KB

MD5
71da950ee45b570a27917b70d733adda

SHA1
d22dc46f2a730b2124f74b8e1b312c8cddf6dbb2

SHA256
4e7545ccbf72ef0598424910626db55acfa90718964dc0632870aca315e7f225

SHA512
f3120fd488813cc017c3a91b49af08fdea9914f3d3954142409b04104414b4155eb7e46f47c761233d8edd68e80d3a314dfbf172ba9ca5d139832a301451bd67

Download Submit
C:\ProgramData\AMMYY\aa_nts.msg

Filesize
45B

MD5
f5d867c23b8cac17baecc8cd2ac118b9

SHA1
ab0da5d10496611ae18f28822c32507aa531dfc4

SHA256
52ebeac5f05e8e12afb680e5e291b41a440cc7dbb812fddd075b6f7586c4fd2b

SHA512
1a067037fb1a8f6782681902e6dc391e399c5caf3e430bdacc30d2cd36985d4eff72359d676e7799dbac3f2f58f697181934a67af18a366cb58a69e6f56e837d

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

Filesize
316B

MD5
b76abe6342b5f0f93ed93ebe3ecf3d58

SHA1
1584113b9bb8f75a2fb2e50f55b9d4aa0da809a5

SHA256
0dc6df67d820bc53f90333843bbe182466530f83bd86d9f440a772bf51daf414

SHA512
058897103b6bafe76d419deca68ff2e83c09cbd8e5a96063d0f0ca73d23bbe2748cc1fdfac2140af89d5ad0e9637bc2ad9901824eeb0ea2079f99b266ecf51d8

Download Submit
memory/1440-20-0x0000000064200000-0x00000000642EE000-memory.dmp

Filesize
952KB

Download
memory/1440-41-0x0000000064200000-0x00000000642EE000-memory.dmp

Filesize
952KB

Download
memory/1440-60-0x0000000064200000-0x00000000642EE000-memory.dmp

Filesize
952KB

Download
memory/1440-76-0x0000000064200000-0x00000000642EE000-memory.dmp

Filesize
952KB

Download
memory/1440-90-0x0000000064200000-0x00000000642EE000-memory.dmp

Filesize
952KB

Download
memory/1440-104-0x0000000064200000-0x00000000642EE000-memory.dmp

Filesize
952KB

Download
memory/1440-120-0x0000000064200000-0x00000000642EE000-memory.dmp

Filesize
952KB

Download
memory/1440-136-0x0000000064200000-0x00000000642EE000-memory.dmp

Filesize
952KB

Download