flawedammyy | e4a87095c27219afe9c7a3cb01c13de899e201d2340748a5fc446207c8f99b2a

General

Target

AMMYY_Admin.exe
Size

651KB
MD5

b730e7b8f3eebd51dc21d7997313b890
SHA1

57ef7a2d07f3703f84c1d7ad33e34e550d23a6fa
SHA256

e4a87095c27219afe9c7a3cb01c13de899e201d2340748a5fc446207c8f99b2a
SHA512

05e87e0ac0e6c097cec3e3801c66752f1a69bd3f8b732062b16596fd4e46388e66eb2e4455ede69769dad62cb7a063849cc2199c140c6ba6a498173eaafe051d
SSDEEP

12288:caA9OKLSwaIN5U8xvFoRQMEoO2rx8ikfRtjIe9rtv8zl6mi/gQ:AkK+waI8JRQMEJ2rufRtse9rtv8zlBi3

Score

10^/10

flawedammyy trojan

Malware Config

Signatures

FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
trojan flawedammyy

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

AMMYY_Admin.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Control Panel\International\Geo\Nation	AMMYY_Admin.exe

Drops file in System32 directory 12 IoCs

Processes:

AMMYY_Admin.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\5037AC1E573F140500110A0B67548B5E	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\5037AC1E573F140500110A0B67548B5E	AMMYY_Admin.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	AMMYY_Admin.exe

Modifies data under HKEY_USERS 9 IoCs

Processes:

AMMYY_Admin.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	AMMYY_Admin.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	AMMYY_Admin.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	AMMYY_Admin.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	AMMYY_Admin.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	AMMYY_Admin.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	AMMYY_Admin.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	AMMYY_Admin.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	AMMYY_Admin.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	AMMYY_Admin.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

AMMYY_Admin.exe

description	pid	process
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe
Token: SeBackupPrivilege	4684	AMMYY_Admin.exe
Token: SeRestorePrivilege	4684	AMMYY_Admin.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

AMMYY_Admin.exe

pid process

4684 AMMYY_Admin.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

AMMYY_Admin.exe

pid process

4684 AMMYY_Admin.exe

pid	process
4684	AMMYY_Admin.exe

pid	process
4684	AMMYY_Admin.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

AMMYY_Admin.exe

description	pid	process	target process
PID 1260 wrote to memory of 4684	1260	AMMYY_Admin.exe	AMMYY_Admin.exe
PID 1260 wrote to memory of 4684	1260	AMMYY_Admin.exe	AMMYY_Admin.exe
PID 1260 wrote to memory of 4684	1260	AMMYY_Admin.exe	AMMYY_Admin.exe

C:\Users\Admin\AppData\Local\Temp\AMMYY_Admin.exe
"C:\Users\Admin\AppData\Local\Temp\AMMYY_Admin.exe"
1⤵
PID:4492

C:\Users\Admin\AppData\Local\Temp\AMMYY_Admin.exe
"C:\Users\Admin\AppData\Local\Temp\AMMYY_Admin.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4684

C:\Users\Admin\AppData\Local\Temp\AMMYY_Admin.exe
"C:\Users\Admin\AppData\Local\Temp\AMMYY_Admin.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:1260

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\AMMYY\settings.bin

Filesize
76B

MD5
090bba5cbe9cd62189310f633f14d686

SHA1
0ce1d78aace04650b0c592665686a89412c1771c

SHA256
7bc48188bbd0ad1b7ac10257e6a8fc5327f2ccfd56402a4353f6d8ef26eb0ff8

SHA512
846781bdb4d8902963f1859077c8db4c763fdd4ca28f0be83b95c20d324b5db030f312fc3d4f959dc05ca4f41ef872a49d123195494b16440e16ebcc5edb31a7

Download Submit

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads