bazarloader | 52e3cf3516a9bd3777b76223e6e2c49eb66bae4903d33ca04c5188499560c552

General

Target

statistics.010.21.21.doc
Size

34KB
MD5

81a0f5b3638ae19f39850639ca26323a
SHA1

c5079a46f9391690ecb2023c54c8022b375e507e
SHA256

c39abbf3cd7a0a4055f7b36f73c1b3bce6b02a74d6fd700a46c3993e37544ee6
SHA512

b317a4bce70605eb5ea6be5818be274454d56a202c5c652682291c574bd5a1a63a8ae0646d09771ccdfaca08d1ee7c069c6fb236d257a78de32bacf65743e872

Score

10^/10

bazarloader dropper loader

Malware Config

Signatures

Bazar Loader
Detected loader normally used to deploy BazarBackdoor malware.
loader dropper bazarloader

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

mshta.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	3296	4056	mshta.exe	WINWORD.EXE

Bazar/Team9 Loader payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3688-292-0x0000000002060000-0x0000000002286000-memory.dmp	BazarLoaderVar5

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

38 3296 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

regsvr32.exeregsvr32.exe

pid process

3936 regsvr32.exe
3688 regsvr32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	pid	process
38	3296	mshta.exe

pid	process
3936	regsvr32.exe
3688	regsvr32.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

4056 WINWORD.EXE
4056 WINWORD.EXE

Suspicious use of SetWindowsHookEx 20 IoCs

Processes:

WINWORD.EXE

pid	process
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE
4056	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

WINWORD.EXEmshta.exeregsvr32.exe

description	pid	process	target process
PID 4056 wrote to memory of 3296	4056	WINWORD.EXE	mshta.exe
PID 4056 wrote to memory of 3296	4056	WINWORD.EXE	mshta.exe
PID 4056 wrote to memory of 3296	4056	WINWORD.EXE	mshta.exe
PID 3296 wrote to memory of 3936	3296	mshta.exe	regsvr32.exe
PID 3296 wrote to memory of 3936	3296	mshta.exe	regsvr32.exe
PID 3296 wrote to memory of 3936	3296	mshta.exe	regsvr32.exe
PID 3936 wrote to memory of 3688	3936	regsvr32.exe	regsvr32.exe
PID 3936 wrote to memory of 3688	3936	regsvr32.exe	regsvr32.exe

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\statistics.010.21.21.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4056

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\lineMyCaroline.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3296

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" c:\users\public\lineYou.jpg
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3936

C:\Windows\system32\regsvr32.exe
c:\users\public\lineYou.jpg
4⤵
- Loads dropped DLL
PID:3688

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\users\public\lineMyCaroline.hta
MD5
4ee98889de12d1ca3c1ca877d6279168

SHA1
539c1f07e86a1dabec305cb89992b948f70edb55

SHA256
a3fe2af0e6b795d7a998ef2479e4fc7af361057e4d2831a7ec9492fed89cb599

SHA512
6f00ea415d55913bbf6a12d30dde7ff59a911d908519797711b3e7163d83c53b3446d75151f366856f8e9887f175c6128aa03fe6cc701b43451e9de1d5c0a2c8

Download Submit
\??\c:\users\public\lineYou.jpg
MD5
86f7e1efba2afd4d2c071d87317388b7

SHA1
8892705d4df071307ad7faa960c2b8abaa8aaea4

SHA256
0d5ee6a999dab96bfa9db3464f197934d6aba840c116883cb1cbc9030bbcc7a8

SHA512
4ffa1681d4b02b20ca823be4e3ac1bc34ab864bcb13aedbc06586c2511ec30e77d4ac29a4ac97f40223ac0f95847a9c6df9d44666d90bd6098d1ff5f2b80b02c

Download Submit
\Users\Public\lineYou.jpg
MD5
86f7e1efba2afd4d2c071d87317388b7

SHA1
8892705d4df071307ad7faa960c2b8abaa8aaea4

SHA256
0d5ee6a999dab96bfa9db3464f197934d6aba840c116883cb1cbc9030bbcc7a8

SHA512
4ffa1681d4b02b20ca823be4e3ac1bc34ab864bcb13aedbc06586c2511ec30e77d4ac29a4ac97f40223ac0f95847a9c6df9d44666d90bd6098d1ff5f2b80b02c

Download Submit
\Users\Public\lineYou.jpg
MD5
86f7e1efba2afd4d2c071d87317388b7

SHA1
8892705d4df071307ad7faa960c2b8abaa8aaea4

SHA256
0d5ee6a999dab96bfa9db3464f197934d6aba840c116883cb1cbc9030bbcc7a8

SHA512
4ffa1681d4b02b20ca823be4e3ac1bc34ab864bcb13aedbc06586c2511ec30e77d4ac29a4ac97f40223ac0f95847a9c6df9d44666d90bd6098d1ff5f2b80b02c

Download Submit
memory/3296-256-0x0000000000000000-mapping.dmp

Download
memory/3688-290-0x0000000000000000-mapping.dmp

Download
memory/3688-292-0x0000000002060000-0x0000000002286000-memory.dmp

Filesize
2.1MB

Download
memory/3936-287-0x0000000000000000-mapping.dmp

Download
memory/4056-120-0x000001F3482D0000-0x000001F3482D2000-memory.dmp

Filesize
8KB

Download
memory/4056-121-0x000001F3482D0000-0x000001F3482D2000-memory.dmp

Filesize
8KB

Download
memory/4056-122-0x000001F3482D0000-0x000001F3482D2000-memory.dmp

Filesize
8KB

Download
memory/4056-115-0x00007FF86EA30000-0x00007FF86EA40000-memory.dmp

Filesize
64KB

Download
memory/4056-119-0x00007FF86EA30000-0x00007FF86EA40000-memory.dmp

Filesize
64KB

Download
memory/4056-118-0x00007FF86EA30000-0x00007FF86EA40000-memory.dmp

Filesize
64KB

Download
memory/4056-117-0x00007FF86EA30000-0x00007FF86EA40000-memory.dmp

Filesize
64KB

Download
memory/4056-116-0x00007FF86EA30000-0x00007FF86EA40000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads