anchordns | 2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775

General

Target

2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe
Size

481KB
MD5

5d83bd79bc681fb123e9c4078437b48f
SHA1

fa98074dc18ad7e2d357b5d168c00a91256d87d1
SHA256

2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775
SHA512

933919fea47ff5102564f6597f1ed277e699cdd746835a0039fa531e50b8fbb18532626a6900b5c18e88d15d2f6173f41c3b2d8ccf9109802aaf27a502ab0dc6

Score

10^/10

anchordns backdoor persistence

Malware Config

Signatures

AnchorDNS Backdoor
A backdoor which communicates with C2 through DNS, attributed to the creators of Trickbot and Bazar.
backdoor anchordns

Detected AnchorDNS Backdoor 1 IoCs

Sample triggered yara rules associated with the AnchorDNS malware family.

backdoor

resource	yara_rule
behavioral1/files/0x0006000000014023-55.dat	family_anchor_dns

Sets DLL path for service in the registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Tries to connect to .bazar domain 2 IoCs

Attempts to lookup or connect to a .bazar domain, used by BazarBackdoor, Trickbot, and potentially others.

flow	ioc
2	toexample.bazar
3	toexample.bazar

Deletes itself 1 IoCs

pid	Process
576	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1528	Process not Found

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	checkip.amazonaws.com

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\System32\netehpkh.dll	2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
588	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1412	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 576	1732	2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe	28
PID 1732 wrote to memory of 576	1732	2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe	28
PID 1732 wrote to memory of 576	1732	2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe	28
PID 1732 wrote to memory of 268	1732	2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe	29
PID 1732 wrote to memory of 268	1732	2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe	29
PID 1732 wrote to memory of 268	1732	2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe	29
PID 268 wrote to memory of 1412	268	cmd.exe	32
PID 268 wrote to memory of 1412	268	cmd.exe	32
PID 268 wrote to memory of 1412	268	cmd.exe	32
PID 576 wrote to memory of 588	576	cmd.exe	33
PID 576 wrote to memory of 588	576	cmd.exe	33
PID 576 wrote to memory of 588	576	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe
"C:\Users\Admin\AppData\Local\Temp\2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Windows\system32\cmd.exe
  cmd.exe /c timeout 5 && del C:\Users\Admin\AppData\Local\Temp\2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:576
- - C:\Windows\system32\timeout.exe
    timeout 5
    3⤵
    - Delays execution with timeout.exe
    PID:588
- C:\Windows\system32\cmd.exe
  cmd.exe /C PowerShell "Start-Sleep 5; Remove-Item C:\Users\Admin\AppData\Local\Temp\2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:268
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    PowerShell "Start-Sleep 5; Remove-Item C:\Users\Admin\AppData\Local\Temp\2c446cad1e15d82521022281b81f905867e33e9ae33c3e7e4959972d40230775.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1412-56-0x000007FEFBC01000-0x000007FEFBC03000-memory.dmp

Filesize
8KB

Download
memory/1412-57-0x0000000002580000-0x0000000002582000-memory.dmp

Filesize
8KB

Download
memory/1412-59-0x0000000002582000-0x0000000002584000-memory.dmp

Filesize
8KB

Download
memory/1412-60-0x0000000002584000-0x0000000002587000-memory.dmp

Filesize
12KB

Download
memory/1412-58-0x000007FEF2B30000-0x000007FEF368D000-memory.dmp

Filesize
11.4MB

Download
memory/1412-61-0x000000000258B000-0x00000000025AA000-memory.dmp

Filesize
124KB

Download

Analysis

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