ammyyadmin | b88f6c305d8066f04f98419a2705f82976e225b886d0d621ec9aa6fa33c6956f

General

Target

025754318db94857d12110b010fe457d_JaffaCakes118.exe
Size

885KB
MD5

025754318db94857d12110b010fe457d
SHA1

e195e19413b83b2621d69d1b92cabcc94b3ebdd7
SHA256

b88f6c305d8066f04f98419a2705f82976e225b886d0d621ec9aa6fa33c6956f
SHA512

f930249d408f339a45baa6e5f9ebf681026666ae6e840181a67854cb4a4239f2d2a6f500d8d43e9ad1009158397a96c37dbe300414b82972b4e3effb0698c9d3
SSDEEP

24576:SZTqYfOectmtS4Px1Rt4MmqZZtU6N+Q1384XmD:SZTqBe6m8yx57tH138xD

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
behavioral1/memory/2340-0-0x0000000000400000-0x00000000004B9000-memory.dmp	family_ammyyadmin
behavioral1/memory/2820-14-0x0000000000400000-0x00000000004B9000-memory.dmp	family_ammyyadmin
behavioral1/memory/2340-18-0x0000000000400000-0x00000000004B9000-memory.dmp	family_ammyyadmin
behavioral1/memory/2720-29-0x0000000000400000-0x00000000004B9000-memory.dmp	family_ammyyadmin

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

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000d000000012262-2.dat	acprotect

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-1-5-21-457978338-2990298471-2379561640-1000\Control Panel\International\Geo\Nation	025754318db94857d12110b010fe457d_JaffaCakes118.exe

Loads dropped DLL 3 IoCs

pid	Process
2340	025754318db94857d12110b010fe457d_JaffaCakes118.exe
2820	025754318db94857d12110b010fe457d_JaffaCakes118.exe
2720	025754318db94857d12110b010fe457d_JaffaCakes118.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	025754318db94857d12110b010fe457d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	025754318db94857d12110b010fe457d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	025754318db94857d12110b010fe457d_JaffaCakes118.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	025754318db94857d12110b010fe457d_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c17525317257079114cb36b	025754318db94857d12110b010fe457d_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 4f953a6d1729f07e01897713acaae0ebdc608742756342ab69ffafad28690fa1fe00474622881aca98c7119a2c0eda39bc6dfbe0c21868f971e06deecde224349bdad55364317ab52b5784	025754318db94857d12110b010fe457d_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	025754318db94857d12110b010fe457d_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	025754318db94857d12110b010fe457d_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	025754318db94857d12110b010fe457d_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2720	025754318db94857d12110b010fe457d_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2720	025754318db94857d12110b010fe457d_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2340	025754318db94857d12110b010fe457d_JaffaCakes118.exe
2820	025754318db94857d12110b010fe457d_JaffaCakes118.exe
2720	025754318db94857d12110b010fe457d_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 2720	2820	025754318db94857d12110b010fe457d_JaffaCakes118.exe	31
PID 2820 wrote to memory of 2720	2820	025754318db94857d12110b010fe457d_JaffaCakes118.exe	31
PID 2820 wrote to memory of 2720	2820	025754318db94857d12110b010fe457d_JaffaCakes118.exe	31
PID 2820 wrote to memory of 2720	2820	025754318db94857d12110b010fe457d_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\025754318db94857d12110b010fe457d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\025754318db94857d12110b010fe457d_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2340

C:\Users\Admin\AppData\Local\Temp\025754318db94857d12110b010fe457d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\025754318db94857d12110b010fe457d_JaffaCakes118.exe" -service -lunch
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Users\Admin\AppData\Local\Temp\025754318db94857d12110b010fe457d_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\025754318db94857d12110b010fe457d_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2720

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\hr

Filesize
22B

MD5
f258b93a7438ddf48d1cc25fba99d44e

SHA1
de29637462d7f2325f2c96cc9cdb3efe440923d9

SHA256
783b30f0cb4f33335a3206268e0a181caa5ef8c8fb0381bf9b2943450fdc4487

SHA512
e7a61aa9cba059d3c1c48c1b5523c008cc5b00e7e370a0b05196eaf70ad364ef468c837c45cc06f5dadd67663204e1dddc2a17f1fe525e4f4e820ec8d5cd79ce

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
3b7c43598bbc8bc27863266c82c6e224

SHA1
f00e8d30f16000ba80768d29654baeb9143e0865

SHA256
b25edba7aa378ecd77d5870761302fdc0dd291bf9ee86eedd5dc0d8b0afc8e49

SHA512
a530cec0942fabb6b9bec90b9dafd0a30130d76ef09f48b3ea3cd7d54c4aba2a9a991e8a0ead2bf8360f215fbeed8f4981cb80d547e8a403c9901f271af1bfe4

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

Filesize
269B

MD5
097a18ed7b31114c7ef39ef06eff02f0

SHA1
276bb5fc8ab72ed3a447dd57be668ace8f75a7c1

SHA256
985b458559939244b777d09d71d6192a13f693b88b046ca904012603a5582812

SHA512
168ef05ddb434dd4003748c7cd6ea9ed5c8280506de4473c3b193fffc314b469e85e2474f919f189c9b7ffb16aa741d75900341a9802dae175ad185e1fea3e96

Download Submit
\Users\Admin\AppData\Local\Temp\yll6EF9.tmp

Filesize
172KB

MD5
685f1cbd4af30a1d0c25f252d399a666

SHA1
6a1b978f5e6150b88c8634146f1406ed97d2f134

SHA256
0e478c95a7a07570a69e6061e7c1da9001bccad9cc454f2ed4da58824a13e0f4

SHA512
6555ad6b4f4f26105ca8aad64501d74519a3e091f559b4b563d6ffb20a2ddfcde65e4fe94971a9bc65e86db577f2548ca00f9920d341c8ea808b04c0947d61d9

Download Submit
memory/2340-18-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2340-19-0x00000000005A0000-0x0000000000613000-memory.dmp

Filesize
460KB

Download
memory/2340-0-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2340-4-0x00000000005A0000-0x0000000000613000-memory.dmp

Filesize
460KB

Download
memory/2720-22-0x00000000007B0000-0x0000000000823000-memory.dmp

Filesize
460KB

Download
memory/2720-29-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2720-30-0x00000000007B0000-0x0000000000823000-memory.dmp

Filesize
460KB

Download
memory/2720-36-0x00000000007B0000-0x0000000000823000-memory.dmp

Filesize
460KB

Download
memory/2820-15-0x0000000000300000-0x0000000000373000-memory.dmp

Filesize
460KB

Download
memory/2820-14-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2820-12-0x0000000001320000-0x00000000013D9000-memory.dmp

Filesize
740KB

Download
memory/2820-11-0x0000000000300000-0x0000000000373000-memory.dmp

Filesize
460KB

Download

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