ammyyadmin | 5512c8b42e96b051ad12fbab36689d10860d807f258a6bc1c77b4b110db5bb8e

General

Target

f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Size

267KB
MD5

f3ea0b41143e7afc6221f42f2503653c
SHA1

c3eb377ed5ad63ad7a5fc6fd73d4101c928dac64
SHA256

5512c8b42e96b051ad12fbab36689d10860d807f258a6bc1c77b4b110db5bb8e
SHA512

610feccd8e78ec57a687d412e87519d4bf780aa347ee3068d9d692b263c270a96cf44b6510f7fc4a862dda0c83e062ccaf90a05a17bd16f6d8256ed51f100cfd
SSDEEP

6144:OnUt0y4KIZwZIa+kP63kiYH6NyEyF3Ved54RTeJq:OnU2FHatipBNyEyF3Ve+TT

Score

10^/10

ammyyadmin flawedammyy discovery rat trojan upx

Malware Config

Signatures

Ammyy Admin
Remote admin tool with various capabilities.
rat ammyyadmin

AmmyyAdmin payload 3 IoCs

resource	yara_rule
behavioral2/memory/3608-4-0x0000000000400000-0x0000000000497000-memory.dmp	family_ammyyadmin
behavioral2/memory/3744-5-0x0000000000400000-0x0000000000497000-memory.dmp	family_ammyyadmin
behavioral2/memory/212-19-0x0000000000400000-0x0000000000497000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe

Drops file in System32 directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\34B6AF881B9D738561FC099B83DF3A01	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\34B6AF881B9D738561FC099B83DF3A01	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3744-0-0x0000000000400000-0x0000000000497000-memory.dmp	upx
behavioral2/memory/3608-4-0x0000000000400000-0x0000000000497000-memory.dmp	upx
behavioral2/memory/3744-5-0x0000000000400000-0x0000000000497000-memory.dmp	upx
behavioral2/memory/212-19-0x0000000000400000-0x0000000000497000-memory.dmp	upx

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	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.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:"	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
212	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
212	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
212	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
212	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3608 wrote to memory of 212	3608	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe	83
PID 3608 wrote to memory of 212	3608	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe	83
PID 3608 wrote to memory of 212	3608	f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:3744

C:\Users\Admin\AppData\Local\Temp\f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Users\Admin\AppData\Local\Temp\f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.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 FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:212

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

Loading Replay Monitor...

Downloads

C:\ProgramData\AMMYY\settings.bin

Filesize
76B

MD5
090bba5cbe9cd62189310f633f14d686

SHA1
0ce1d78aace04650b0c592665686a89412c1771c

SHA256
7bc48188bbd0ad1b7ac10257e6a8fc5327f2ccfd56402a4353f6d8ef26eb0ff8

SHA512
846781bdb4d8902963f1859077c8db4c763fdd4ca28f0be83b95c20d324b5db030f312fc3d4f959dc05ca4f41ef872a49d123195494b16440e16ebcc5edb31a7

Download Submit
C:\Users\Admin\AppData\Local\Temp\f3ea0b41143e7afc6221f42f2503653c_JaffaCakes118.log

Filesize
162B

MD5
5fad1c15df96b22438cfa772f2efe9aa

SHA1
da4133747737d41bc82fca37a372cca2c3419c13

SHA256
c1820c2b5aa0f08f56db54a99c21bf9c91093c5e17c208daf0c8522822b795ad

SHA512
751fa0016d5d25e566921a005c3744189410508b594f001918f853f14de35e80f658f775d0661e48a9ba5ef711b053fd2b3042ed39fdcd1cc2051d6ad94954a5

Download Submit
memory/212-19-0x0000000000400000-0x0000000000497000-memory.dmp

Filesize
604KB

Download
memory/3608-4-0x0000000000400000-0x0000000000497000-memory.dmp

Filesize
604KB

Download
memory/3744-0-0x0000000000400000-0x0000000000497000-memory.dmp

Filesize
604KB

Download
memory/3744-5-0x0000000000400000-0x0000000000497000-memory.dmp

Filesize
604KB

Download

Analysis

Sharing