ammyyadmin | 3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576

General

Target

3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Size

651KB
MD5

e59083fc9d80ed5b698c01ddfea8fcc1
SHA1

f1db45a790994aae4f96c3a1b98ddd5d1257f893
SHA256

3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576
SHA512

e6f3a1f1ef8956423e9d07aa57d251a3cc6de661d1c467f832e14822504df330f6099b1c5cbe79914c7cac63be2a2a7c3542f9b0ba92a0d26841ca8764346c34
SSDEEP

12288:2aA9OKLSwaIN5U8xvFoRQMEoO2rx8ikfRtjIe9rtv8zl6mi/gQ:KkK+waI8JRQMEJ2rufRtse9rtv8zlBi3

Score

10^/10

ammyyadmin flawedammyy discovery rat trojan

Malware Config

Signatures

Ammyy Admin
Remote admin tool with various capabilities.
rat ammyyadmin

AmmyyAdmin payload 4 IoCs

resource	yara_rule
behavioral2/memory/1840-0-0x0000000000400000-0x00000000004B2000-memory.dmp	family_ammyyadmin
behavioral2/memory/2780-2-0x0000000000400000-0x00000000004B2000-memory.dmp	family_ammyyadmin
behavioral2/memory/1840-4-0x0000000000400000-0x00000000004B2000-memory.dmp	family_ammyyadmin
behavioral2/memory/4168-16-0x0000000000400000-0x00000000004B2000-memory.dmp	family_ammyyadmin

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe

Drops file in System32 directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\34B6AF881B9D738561FC099B83DF3A01	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\34B6AF881B9D738561FC099B83DF3A01	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.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	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe

Modifies data under HKEY_USERS 9 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeBackupPrivilege	4168	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Token: SeRestorePrivilege	4168	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Token: SeBackupPrivilege	4168	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
Token: SeRestorePrivilege	4168	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4168	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4168	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 4168	2780	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe	84
PID 2780 wrote to memory of 4168	2780	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe	84
PID 2780 wrote to memory of 4168	2780	3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe	84

C:\Users\Admin\AppData\Local\Temp\3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
"C:\Users\Admin\AppData\Local\Temp\3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1840

C:\Users\Admin\AppData\Local\Temp\3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
"C:\Users\Admin\AppData\Local\Temp\3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Users\Admin\AppData\Local\Temp\3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe
  "C:\Users\Admin\AppData\Local\Temp\3be888aaea64006a812de63d81597596777e3b4b03f12437ed720e23f4e66576.exe"
  2⤵
  - Checks computer location settings
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:4168

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

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\settings.bin

Filesize
76B

MD5
090bba5cbe9cd62189310f633f14d686

SHA1
0ce1d78aace04650b0c592665686a89412c1771c

SHA256
7bc48188bbd0ad1b7ac10257e6a8fc5327f2ccfd56402a4353f6d8ef26eb0ff8

SHA512
846781bdb4d8902963f1859077c8db4c763fdd4ca28f0be83b95c20d324b5db030f312fc3d4f959dc05ca4f41ef872a49d123195494b16440e16ebcc5edb31a7

Download Submit
memory/1840-0-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1840-4-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2780-2-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4168-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

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