flawedammyy | 7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33

General

Target

7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Size

720KB
MD5

b524424eca8eb35d121f284a50bc2f76
SHA1

e47097b7d1e1338785ab188dedbe40bec22254de
SHA256

7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33
SHA512

a70f9442df6b1645d1b81ad128dad3db114eadc7f58c2bb1198128a0b55078655b8c2cc71f61223aea37961b47342f3b3f3b3a8ceb48c4a67daf488df48dd6e8
SSDEEP

12288:PYdNctvsfu2LVBfKf057C9lRt3i5olGJsxhzVEg4:wdNikfu2hBfK8ilRty5olGJsxd4

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\IE	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.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	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.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\Cookies\CachePrefix = "Cookie:"	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c6658524c17525314cc1578a83eb36b	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 090dfe16d73d53820757c41ab4c54b69bd6480eb5920abf001ec0e18a4a1744ddd5478da801d3a616a64137fe580780afe5ac94d61e8de1eb4ba1802a5a7d177b5c9535c097efde7e73a1a	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3368	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3368	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 3368	4760	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	84
PID 4760 wrote to memory of 3368	4760	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	84
PID 4760 wrote to memory of 3368	4760	7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe	84

C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
"C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4904

C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
"C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.exe
  "C:\Users\Admin\AppData\Local\Temp\7769722d0139b95d05004028ecb7de6c5d2710332fd69dd0b99796d77b1dbc33.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:3368

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
4f7743e0c1c8b2098bfe50973648a8fb

SHA1
ec851e706d408fd54938ff6b048393d2e5cf8abd

SHA256
0450c06ced5bd514ddc1c6a13d59d688bfd31d6b9e22d7dcf59507406347ff7f

SHA512
f9007ac0b2411322064b0980b881cff7e54138eee22656fee651ebc450723e924b34ba6a9fb4a53e51f00fe507886cb947204191ac9588fcbd5027edb3d64b5f

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
6201ed24e9f45d438797b91de422ed22

SHA1
edd4a92412a30fdcf0367a76042e4fdeaf4fdc59

SHA256
3f9bb91dd1a4378ae1e9e4a9295a516f285c3c34bb74a26216de7f9face9d0e5

SHA512
736c22b51cc2b5a7f7a0c13d3801a832aedc8a8ff6eccb2a42340309add31148dfe8255dda151eeab56f6d921f5865219042b5d885826def757521b3acd796f3

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

Filesize
307B

MD5
6d41ae530d5f0c5531a343fb58a856ba

SHA1
c15b36f055c1cb7b5f743c7123e6a79ebfbb1eb1

SHA256
301fc095cca3f5f1f2449f39871b548cca14f795a556e8c63d319b91df90221f

SHA512
d2b32bdbbe3371db7bcd45d7e0ced6388bab6af5cc065e927de362ed2828c4aa82d1af28c4fedcbdf8b82beedfe0b8666b9bdec970cefe2a7133b0b7797adfda

Download Submit

Analysis

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