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 4 IoCs

resource	yara_rule
behavioral2/memory/1692-0-0x0000000000400000-0x00000000004C4000-memory.dmp	family_ammyyadmin
behavioral2/memory/2260-4-0x0000000000400000-0x00000000004C4000-memory.dmp	family_ammyyadmin
behavioral2/memory/1692-6-0x0000000000400000-0x00000000004C4000-memory.dmp	family_ammyyadmin
behavioral2/memory/2668-11-0x0000000000400000-0x00000000004C4000-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

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	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 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = c896e824a7781441d279d51f4b6ed5f628cf04c440f0498c052c5ab43fbbe4c3dedfca1f057cb2d099361968c2e03c353dfa7830a2a2b170f7b9249dfed8f7c64f10764106ad80b4bab1db	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c6658524c17525352aedefa4534b36b	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2668	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2668	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 2668	2260	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe	84
PID 2260 wrote to memory of 2668	2260	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe	84
PID 2260 wrote to memory of 2668	2260	172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe	84

C:\Users\Admin\AppData\Local\Temp\172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
"C:\Users\Admin\AppData\Local\Temp\172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1692

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:2260
- C:\Users\Admin\AppData\Local\Temp\172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe
  "C:\Users\Admin\AppData\Local\Temp\172ccd7a05670e06f4dfe6573418b4e1377cf3a7cd1e02a6f69030c9e37f17a6N.exe"
  2⤵
  - 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:2668

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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
e7b7c71ed5c6cc4ab1ce8af3e6344164

SHA1
1744bd91037b980d55a0b03ee7d5c74fbf2fb3f7

SHA256
7ec157c248a94f5274cbb3ba9c434b60da131602c60264a66cd8be6fceacdb7b

SHA512
a64cbe519b9c32db8be526194cf0ed64ab4c8c8c919d4f3c63a070d48617c3f7de9f38ddf39dde9fb0f9bd1ce7c4c63c38c91c842d7c95638e7d49b213bcde6c

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
3c4f2a19be33ba577db1f9e5b7129250

SHA1
1a6ee791175e3e3020baa264ebd0976b401de6dd

SHA256
82ddcdad2b9523052f3eb970079064733bf6205e1f0ac8364d4b160176cd98ee

SHA512
349d36e7d0665d1c5a34e0e6bc194075241df4270d37139393f335c86dc6b99015f303fb06a80bca15185fc39874fe6248c03d098810c7744a66e1a1a03eb9ab

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

Filesize
271B

MD5
4cb889e527b0d0781a17f6c2dd968129

SHA1
6a6a55cd5604370660f1c1ad1025195169be8978

SHA256
2658cd46dd49335e739cafa31ff2ec63f3315b65ecc171a0f7612713d3ac702b

SHA512
297d2c05d2ac950faeb519d3e7bc56ea9d9fcab65b5dfdbba2720be8eddc8b2d5ead3dc7c122b82d6937be6c2d7bb88872dd7b80961138571245fba381daac3f

Download Submit
memory/1692-0-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/1692-6-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2260-4-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2668-11-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download

Analysis

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