bazarbackdoor | 5a7d360225defcc80b5d30efb865f76d377aaa044b5ec42c2c40a3359c968f3e

General

Target

6bf2a52b5755de865d691045806936f9.dll
Size

353KB
MD5

6bf2a52b5755de865d691045806936f9
SHA1

70c164d08608478ba36e1479f0277dffc4fd951f
SHA256

5a7d360225defcc80b5d30efb865f76d377aaa044b5ec42c2c40a3359c968f3e
SHA512

b7a3c199e2ae2904907726b831ba00222c734e69079574aa6ddbf023bbe5cb922a7cbd0130f3557b67ccc624264fb516824e1087fde4fbcce3681b66c16782bf

Score

10^/10

bazarbackdoor bazarloader backdoor dropper loader

Malware Config

Signatures

Bazar Loader
Detected loader normally used to deploy BazarBackdoor malware.
loader dropper bazarloader
BazarBackdoor
Stealthy backdoor targeting corporate networks, believed to be developed by Trickbot's authors.
backdoor bazarbackdoor

Bazar/Team9 Backdoor payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3396-117-0x00007FF7FE190000-0x00007FF7FE1DB000-memory.dmp	BazarBackdoorVar4
behavioral2/memory/3396-118-0x00007FF7FE1B4730-mapping.dmp	BazarBackdoorVar4
behavioral2/memory/3396-119-0x00007FF7FE190000-0x00007FF7FE1DB000-memory.dmp	BazarBackdoorVar4

Bazar/Team9 Loader payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1892-115-0x0000000345021000-0x0000000345048000-memory.dmp	BazarLoaderVar6

Suspicious use of SetThreadContext 1 IoCs

Processes:

regsvr32.exe

description pid process target process

PID 1892 set thread context of 3396 1892 regsvr32.exe svchost.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

regsvr32.exe

pid process

1892 regsvr32.exe
1892 regsvr32.exe
1892 regsvr32.exe
1892 regsvr32.exe
1892 regsvr32.exe
1892 regsvr32.exe

description	pid	process	target process
PID 1892 set thread context of 3396	1892	regsvr32.exe	svchost.exe

pid	process
1892	regsvr32.exe
1892	regsvr32.exe
1892	regsvr32.exe
1892	regsvr32.exe
1892	regsvr32.exe
1892	regsvr32.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

regsvr32.exe

description	pid	process	target process
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe
PID 1892 wrote to memory of 3396	1892	regsvr32.exe	svchost.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\6bf2a52b5755de865d691045806936f9.dll
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k UnistackSvcGroup
  2⤵
  PID:3396

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\6bf2a52b5755de865d691045806936f9.dll,DllRegisterServer {9612463D-E44A-43E0-B9DC-81C04F80E835}
1⤵
PID:4052

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1892-115-0x0000000345021000-0x0000000345048000-memory.dmp

Filesize
156KB

Download
memory/3396-117-0x00007FF7FE190000-0x00007FF7FE1DB000-memory.dmp

Filesize
300KB

Download
memory/3396-118-0x00007FF7FE1B4730-mapping.dmp

Download
memory/3396-119-0x00007FF7FE190000-0x00007FF7FE1DB000-memory.dmp

Filesize
300KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads