bazarloader | 188575087d85b470d347b84de095bfac2ed849b48e567996a8a41d894088dbfe

General

Target

Documents_593342397_2054746689.xls
Size

293KB
MD5

389033e6344dfd187f5e11eb84879faf
SHA1

49e245741d6f4529e729da82573f950e91716e8e
SHA256

28aa0371eff399c03d0ba976b8ecd3eb2c191fccd52775c669e37bdfa5eef0bd
SHA512

ad8bd29be1b13972db777013e4c5c04be9fd3b66c09efd4a285e83bd6936801258604fcdcd28c3678ff7879f9c7056f28e8136bf037573cad168296821c33695

Score

10^/10

bazarloader dropper loader persistence

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:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2668	4432	rundll32.exe	EXCEL.EXE

Bazar/Team9 Loader payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2428-195-0x00007FF6FDB021DC-mapping.dmp	BazarLoaderVar1
behavioral2/memory/2428-196-0x00007FF6FDB00000-0x00007FF6FDB22000-memory.dmp	BazarLoaderVar1

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

45 2128 rundll32.exe
47 2128 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 4 IoCs

Processes:

rundll32.exerundll32.exerundll32.exerundll32.exe

pid process

2668 rundll32.exe
808 rundll32.exe
1432 rundll32.exe
2128 rundll32.exe

flow	pid	process
45	2128	rundll32.exe
47	2128	rundll32.exe

pid	process
2668	rundll32.exe
808	rundll32.exe
1432	rundll32.exe
2128	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\PRT5WPDS = "C:\\Windows\\SYSTEM32\\rundll32.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\NJ6664C.dll,StartW R6QT"	rundll32.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 2128 set thread context of 2428 2128 rundll32.exe cmd.exe

description	pid	process	target process
PID 2128 set thread context of 2428	2128	rundll32.exe	cmd.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:

EXCEL.EXE

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

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery
T1018

Processes:

PING.EXEPING.EXEPING.EXE

pid process

1976 PING.EXE
4300 PING.EXE
1236 PING.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4432 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

2668 rundll32.exe
2668 rundll32.exe

pid	process
1976	PING.EXE
4300	PING.EXE
1236	PING.EXE

pid	process
2668	rundll32.exe
2668	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

EXCEL.EXErundll32.execmd.exerundll32.execmd.exerundll32.execmd.exerundll32.exe

description	pid	process	target process
PID 4432 wrote to memory of 2668	4432	EXCEL.EXE	rundll32.exe
PID 4432 wrote to memory of 2668	4432	EXCEL.EXE	rundll32.exe
PID 2668 wrote to memory of 2620	2668	rundll32.exe	cmd.exe
PID 2668 wrote to memory of 2620	2668	rundll32.exe	cmd.exe
PID 2620 wrote to memory of 4300	2620	cmd.exe	PING.EXE
PID 2620 wrote to memory of 4300	2620	cmd.exe	PING.EXE
PID 2620 wrote to memory of 808	2620	cmd.exe	rundll32.exe
PID 2620 wrote to memory of 808	2620	cmd.exe	rundll32.exe
PID 808 wrote to memory of 1064	808	rundll32.exe	cmd.exe
PID 808 wrote to memory of 1064	808	rundll32.exe	cmd.exe
PID 1064 wrote to memory of 1236	1064	cmd.exe	PING.EXE
PID 1064 wrote to memory of 1236	1064	cmd.exe	PING.EXE
PID 1064 wrote to memory of 1432	1064	cmd.exe	rundll32.exe
PID 1064 wrote to memory of 1432	1064	cmd.exe	rundll32.exe
PID 1432 wrote to memory of 1704	1432	rundll32.exe	cmd.exe
PID 1432 wrote to memory of 1704	1432	rundll32.exe	cmd.exe
PID 1704 wrote to memory of 1976	1704	cmd.exe	PING.EXE
PID 1704 wrote to memory of 1976	1704	cmd.exe	PING.EXE
PID 1704 wrote to memory of 2128	1704	cmd.exe	rundll32.exe
PID 1704 wrote to memory of 2128	1704	cmd.exe	rundll32.exe
PID 2128 wrote to memory of 2428	2128	rundll32.exe	cmd.exe
PID 2128 wrote to memory of 2428	2128	rundll32.exe	cmd.exe
PID 2128 wrote to memory of 2428	2128	rundll32.exe	cmd.exe
PID 2128 wrote to memory of 2428	2128	rundll32.exe	cmd.exe
PID 2128 wrote to memory of 2428	2128	rundll32.exe	cmd.exe
PID 2128 wrote to memory of 2428	2128	rundll32.exe	cmd.exe
PID 2128 wrote to memory of 2428	2128	rundll32.exe	cmd.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Documents_593342397_2054746689.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4432

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\fmfkdnsm.nnd,StartW
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2668

C:\Windows\SYSTEM32\cmd.exe
cmd /c ping 8.8.7.7 -n 2 & start C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\fmfkdnsm.nnd,StartW RVZL7VH
3⤵
- Suspicious use of WriteProcessMemory
PID:2620

C:\Windows\system32\PING.EXE
ping 8.8.7.7 -n 2
4⤵
- Runs ping.exe
PID:4300

C:\Windows\SYSTEM32\rundll32.exe
C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\fmfkdnsm.nnd,StartW RVZL7VH
4⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:808

C:\Windows\SYSTEM32\cmd.exe
cmd /c ping 8.8.7.7 -n 2 & start C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\NJ6664C.dll,StartW SCM7J8
5⤵
- Suspicious use of WriteProcessMemory
PID:1064

C:\Windows\system32\PING.EXE
ping 8.8.7.7 -n 2
6⤵
- Runs ping.exe
PID:1236

C:\Windows\SYSTEM32\rundll32.exe
C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\NJ6664C.dll,StartW SCM7J8
6⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1432

C:\Windows\SYSTEM32\cmd.exe
cmd /c ping 8.8.7.7 -n 2 & start C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\NJ6664C.dll,StartW R6QT
7⤵
- Suspicious use of WriteProcessMemory
PID:1704

C:\Windows\system32\PING.EXE
ping 8.8.7.7 -n 2
8⤵
- Runs ping.exe
PID:1976

C:\Windows\SYSTEM32\rundll32.exe
C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\NJ6664C.dll,StartW R6QT
8⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2128

C:\Windows\SYSTEM32\cmd.exe
cmd.exe
9⤵
PID:2428

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

Query Registry

2

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\NJ6664C.dll
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
C:\Users\Admin\fmfkdnsm.nnd
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
\Users\Admin\AppData\Local\Temp\NJ6664C.dll
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
\Users\Admin\AppData\Local\Temp\NJ6664C.dll
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
\Users\Admin\fmfkdnsm.nnd
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
\Users\Admin\fmfkdnsm.nnd
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
memory/808-184-0x0000000000000000-mapping.dmp

Download
memory/1064-186-0x0000000000000000-mapping.dmp

Download
memory/1236-187-0x0000000000000000-mapping.dmp

Download
memory/1432-188-0x0000000000000000-mapping.dmp

Download
memory/1704-191-0x0000000000000000-mapping.dmp

Download
memory/1976-192-0x0000000000000000-mapping.dmp

Download
memory/2128-193-0x0000000000000000-mapping.dmp

Download
memory/2428-195-0x00007FF6FDB021DC-mapping.dmp

Download
memory/2428-196-0x00007FF6FDB00000-0x00007FF6FDB22000-memory.dmp

Filesize
136KB

Download
memory/2620-182-0x0000000000000000-mapping.dmp

Download
memory/2668-179-0x0000000000000000-mapping.dmp

Download
memory/4300-183-0x0000000000000000-mapping.dmp

Download
memory/4432-114-0x00007FF6FCF40000-0x00007FF7004F6000-memory.dmp

Filesize
53.7MB

Download
memory/4432-123-0x00007FF9D3040000-0x00007FF9D4F35000-memory.dmp

Filesize
31.0MB

Download
memory/4432-122-0x00007FF9D4F40000-0x00007FF9D602E000-memory.dmp

Filesize
16.9MB

Download
memory/4432-121-0x00007FF9B4570000-0x00007FF9B4580000-memory.dmp

Filesize
64KB

Download
memory/4432-118-0x00007FF9B4570000-0x00007FF9B4580000-memory.dmp

Filesize
64KB

Download
memory/4432-117-0x00007FF9B4570000-0x00007FF9B4580000-memory.dmp

Filesize
64KB

Download
memory/4432-116-0x00007FF9B4570000-0x00007FF9B4580000-memory.dmp

Filesize
64KB

Download
memory/4432-115-0x00007FF9B4570000-0x00007FF9B4580000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads