bazarloader | 2a46ff6e614f60b3166614e9f7f94d0b001cda9b8a2b296e917b0b6aa54dba12

General

Target

question.010.21.doc
Size

34KB
MD5

7a87ef713680cc71ba38945b305a9579
SHA1

08f858b709bea8c5e16bdd026338f02cb7605c88
SHA256

2a46ff6e614f60b3166614e9f7f94d0b001cda9b8a2b296e917b0b6aa54dba12
SHA512

91473bf2ea429e17198ec0dad53cd8323e4d9b520cf63a57857e45fef7edad823b29a648fcd4f166460a6b1bd43ccbcfe9c2c677d1c97d1885a6108c92cdaba0

Score

10^/10

bazarloader dropper loader suricata

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	1344	2744	mshta.exe	WINWORD.EXE

suricata: ET MALWARE BazaLoader Activity (GET)
suricata: ET MALWARE BazaLoader Activity (GET)
suricata

Bazar/Team9 Loader payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/908-293-0x0000000002E90000-0x00000000030B6000-memory.dmp	BazarLoaderVar5

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

40 1344 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

regsvr32.exeregsvr32.exe

pid process

3028 regsvr32.exe
908 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
40	1344	mshta.exe

pid	process
3028	regsvr32.exe
908	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

2744 WINWORD.EXE
2744 WINWORD.EXE

Suspicious use of SetWindowsHookEx 20 IoCs

Processes:

WINWORD.EXE

pid	process
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE
2744	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

WINWORD.EXEmshta.exeregsvr32.exe

description	pid	process	target process
PID 2744 wrote to memory of 1344	2744	WINWORD.EXE	mshta.exe
PID 2744 wrote to memory of 1344	2744	WINWORD.EXE	mshta.exe
PID 2744 wrote to memory of 1344	2744	WINWORD.EXE	mshta.exe
PID 1344 wrote to memory of 3028	1344	mshta.exe	regsvr32.exe
PID 1344 wrote to memory of 3028	1344	mshta.exe	regsvr32.exe
PID 1344 wrote to memory of 3028	1344	mshta.exe	regsvr32.exe
PID 3028 wrote to memory of 908	3028	regsvr32.exe	regsvr32.exe
PID 3028 wrote to memory of 908	3028	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\question.010.21.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:2744

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\seaRedSea.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:1344

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" c:\users\public\seaSeaLady.jpg
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3028

C:\Windows\system32\regsvr32.exe
c:\users\public\seaSeaLady.jpg
4⤵
- Loads dropped DLL
PID:908

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\seaRedSea.hta
MD5
937fd4b981d32e8d76e28d924568fcee

SHA1
61d97a255a266e21dc326ad44e7c1d350eb0b91e

SHA256
c6218d2af935d5b2c97d9d0fb4b2c35aa24709e5704b51c8866ba1af44eb9342

SHA512
82646b237109cefa9d2ef6c5de1494052c0f80a7302e91311b96bf3032251932a55ef87c419cb530444c9ac0886a7309e59c840eb075bb5320ff59b28d85a0c2

Download Submit
\??\c:\users\public\seaSeaLady.jpg
MD5
76c16aea3ab81669aa3f1a5a81f71cb3

SHA1
a1205a8accb4fe42effc71d61fd655d891b7426f

SHA256
3982db7257a243268b58b4f3dd23e15b55fefbb9eada6ab89e8ff21c80e7e150

SHA512
bbe9ea2bd0448e3320c3c402b6d331ab4d85c2cb4928b8f5edeec3ea5973d3a9ba5531056d097a951a88bb73073ce3559344cfe68977f1cabd4a647c00b2cd6f

Download Submit
\Users\Public\seaSeaLady.jpg
MD5
76c16aea3ab81669aa3f1a5a81f71cb3

SHA1
a1205a8accb4fe42effc71d61fd655d891b7426f

SHA256
3982db7257a243268b58b4f3dd23e15b55fefbb9eada6ab89e8ff21c80e7e150

SHA512
bbe9ea2bd0448e3320c3c402b6d331ab4d85c2cb4928b8f5edeec3ea5973d3a9ba5531056d097a951a88bb73073ce3559344cfe68977f1cabd4a647c00b2cd6f

Download Submit
\Users\Public\seaSeaLady.jpg
MD5
76c16aea3ab81669aa3f1a5a81f71cb3

SHA1
a1205a8accb4fe42effc71d61fd655d891b7426f

SHA256
3982db7257a243268b58b4f3dd23e15b55fefbb9eada6ab89e8ff21c80e7e150

SHA512
bbe9ea2bd0448e3320c3c402b6d331ab4d85c2cb4928b8f5edeec3ea5973d3a9ba5531056d097a951a88bb73073ce3559344cfe68977f1cabd4a647c00b2cd6f

Download Submit
memory/908-293-0x0000000002E90000-0x00000000030B6000-memory.dmp

Filesize
2.1MB

Download
memory/908-290-0x0000000000000000-mapping.dmp

Download
memory/1344-255-0x0000000000000000-mapping.dmp

Download
memory/2744-122-0x0000026896F40000-0x0000026896F42000-memory.dmp

Filesize
8KB

Download
memory/2744-115-0x00007FFCF9770000-0x00007FFCF9780000-memory.dmp

Filesize
64KB

Download
memory/2744-121-0x0000026896F40000-0x0000026896F42000-memory.dmp

Filesize
8KB

Download
memory/2744-120-0x0000026896F40000-0x0000026896F42000-memory.dmp

Filesize
8KB

Download
memory/2744-119-0x00007FFCF9770000-0x00007FFCF9780000-memory.dmp

Filesize
64KB

Download
memory/2744-118-0x00007FFCF9770000-0x00007FFCF9780000-memory.dmp

Filesize
64KB

Download
memory/2744-117-0x00007FFCF9770000-0x00007FFCF9780000-memory.dmp

Filesize
64KB

Download
memory/2744-116-0x00007FFCF9770000-0x00007FFCF9780000-memory.dmp

Filesize
64KB

Download
memory/3028-281-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads