flawedammyy | 2d068d78cdb398b0804690ba569695a08bf87dc8e91faa56194d6b6309aa9f97

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-10-2024 18:12

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General

Target

AA_v3.2.exe
Size

722KB
MD5

45c9b54d66cbcc2de89f93e25f368a45
SHA1

2e5265f35f75a50c89e592e127bc80e1e45aa840
SHA256

349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a
SHA512

25c3f1ec6d2e233464090f584777b15f18acfd1cb12124c236680689545ec8208bc364d26d7202e38368dbec34cd824600afb51845df8c9de8c8e83fba8d8b1f
SSDEEP

12288:x2QKNGp2YPjE0d63iVg5Bfi781Rt1hpGqzdpW9eKVQvTPRpsbS5hEgK:xSIp2Ydd6SVcpz1RtXpGadsbShK

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\History\History.IE5	AA_v3.2.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	AA_v3.2.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	AA_v3.2.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	AA_v3.2.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	AA_v3.2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AA_v3.2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AA_v3.2.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	AA_v3.2.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	AA_v3.2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	AA_v3.2.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = d95b5092ed584fdb9e0481888ac0b45b1fdfe89302e7fa1496f9d89280ef294b7dd376b68b991fda906251e4ca85043e8a1eef2a19b1c8c7aa45444928ccffa6bb8001b58dddce4ca0aedf	AA_v3.2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	AA_v3.2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	AA_v3.2.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	AA_v3.2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	AA_v3.2.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c6658524c17525332ff3f979a78b36b	AA_v3.2.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2948	AA_v3.2.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2948	AA_v3.2.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 2948	1508	AA_v3.2.exe	85
PID 1508 wrote to memory of 2948	1508	AA_v3.2.exe	85
PID 1508 wrote to memory of 2948	1508	AA_v3.2.exe	85

C:\Users\Admin\AppData\Local\Temp\AA_v3.2.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.2.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4968

C:\Users\Admin\AppData\Local\Temp\AA_v3.2.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.2.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Local\Temp\AA_v3.2.exe
  "C:\Users\Admin\AppData\Local\Temp\AA_v3.2.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:2948

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\hr

Filesize
22B

MD5
5086db7cfc9267df32cb92569564a738

SHA1
90e37b44d78542b797402f97c7a2aa7bf458415f

SHA256
e9d84cf5133f2103ec60b7f69fbdbb8080501cbf9b0fcb5da0102fa026a2c159

SHA512
82b108421dbe7e42ae97a31fd2cc14703c0b08f156c2c27c92fdd01671ee99cd32b2de59c146ead97c3dd01a9c6d08da0dad6c652f2858caf301ddd2c0de6086

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
6138b26f4650e5c9b28dc04e03a76605

SHA1
9b1b0ec770c041624ce947f69c33fb9483195bba

SHA256
51831310bd88f82ece9408675172bca76e1d6693b05111e67f7954d07bfc5321

SHA512
2802fe0348aa388ece9b9c287def7aa862fe7b2cb2bf4ecfaf334900f80636b387cafb67c07facd5c94fbe85183df3aecad2fd69bd77efd6f60fb5725dd2a2fa

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

Filesize
270B

MD5
6910d9160b66c4395f587a279e80f132

SHA1
54949c04c8c0970aa5e2d3fb2912318daab97b98

SHA256
72d44ac6019d486fc1a58334ff8ed692de0a9ed96de3142638c71376ceade87c

SHA512
82967a8bdbad58f2a81d063c84294153dbdd86322d4b6e3631122530dc7f00fd209ed1d2b0683eb60f726fd3d6f93c7615bd1d0d1fa1f5441119d0e5007582b9

Download Submit