ammyyadmin | 172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6

General

Target

172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Size

720KB
MD5

0b2f70657111edc438cedbf6f329b750
SHA1

5b003bc40778186bbe298ddc51fe39648ec27068
SHA256

172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6
SHA512

03dc71e0811c0cafb07be20382e0f5f2fefa145ce8a426bda5f2fc76b6097605cd03ba1ef4aba4a43dddeb2b04fafc4f69b38f38b71f8876748a2f876901c5c6
SSDEEP

12288:tYdNctvsfu2LVBfKf057C9lRt3i5olGJsxhzag:edNikfu2hBfK8ilRty5olGJsxN

Score

10^/10

ammyyadmin flawedammyy discovery rat trojan

Malware Config

Signatures

Ammyy Admin
Remote admin tool with various capabilities.
rat ammyyadmin

AmmyyAdmin payload 5 IoCs

resource	yara_rule
behavioral1/memory/2372-0-0x0000000000400000-0x00000000004C4000-memory.dmp	family_ammyyadmin
behavioral1/memory/2504-5-0x0000000000400000-0x00000000004C4000-memory.dmp	family_ammyyadmin
behavioral1/memory/2372-8-0x0000000000400000-0x00000000004C4000-memory.dmp	family_ammyyadmin
behavioral1/memory/2488-7-0x0000000000400000-0x00000000004C4000-memory.dmp	family_ammyyadmin
behavioral1/memory/2504-14-0x0000000000400000-0x00000000004C4000-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-1-5-21-3533259084-2542256011-65585152-1000\Control Panel\International\Geo\Nation	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.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	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c175253578727f04534b36b	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = a3461fbe5b67b90dfa21e8e6f10e1a86275dfbe40c589821ceea92c395ec901b957fc38e3b8a02a618feb9afa1ac15698fa20cc802bf49ba69281a0698f2ccab60f8fcbf98b690b81f6ad3	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2504	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2504	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2504	2488	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe	31
PID 2488 wrote to memory of 2504	2488	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe	31
PID 2488 wrote to memory of 2504	2488	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe	31
PID 2488 wrote to memory of 2504	2488	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe	31

C:\Users\Admin\AppData\Local\Temp\172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
"C:\Users\Admin\AppData\Local\Temp\172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2372

C:\Users\Admin\AppData\Local\Temp\172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
"C:\Users\Admin\AppData\Local\Temp\172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Users\Admin\AppData\Local\Temp\172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
  "C:\Users\Admin\AppData\Local\Temp\172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2504

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
2149030a9f75cb23b91d4d7f837e644f

SHA1
98dfb4ec9a8c481c64b781e565fa31876420a646

SHA256
48f23bd5804be3b4bf8bf64aa81865a9876bc7cca88e186e2e06e8fe8c33f57b

SHA512
a58271d59d494cc2d4fe8b3fbea89df3087d59486041334b1daca33eeed85cddf6fbf80655fd76ba71227712449bdb8b848cc647e1294ed0645cb46f70e2dc0a

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
8be5036c46e3a0d42bb3c34dfb68e99b

SHA1
13e5fd75cfc4291977121764cd74e4b0c7e7ac26

SHA256
92791b433d079a276fa96b7430e28e7043af24576ea2409f34609c3957548647

SHA512
22b9fa40cdb1089692e0b7989de1f087a50f94bde1804a96de639ab403617d465b7eac74424826278716023426d5acbd085150338c2853f6ac32e2f65bf85131

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

Filesize
271B

MD5
4cb889e527b0d0781a17f6c2dd968129

SHA1
6a6a55cd5604370660f1c1ad1025195169be8978

SHA256
2658cd46dd49335e739cafa31ff2ec63f3315b65ecc171a0f7612713d3ac702b

SHA512
297d2c05d2ac950faeb519d3e7bc56ea9d9fcab65b5dfdbba2720be8eddc8b2d5ead3dc7c122b82d6937be6c2d7bb88872dd7b80961138571245fba381daac3f

Download Submit
memory/2372-0-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2372-8-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2488-4-0x00000000011D0000-0x0000000001294000-memory.dmp

Filesize
784KB

Download
memory/2488-7-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2504-5-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2504-14-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download

Analysis

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