b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343

General

Target

b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343.exe
Size

240KB
MD5

a2ce3cd82a9e4be7e0cdbcecf3b429d0
SHA1

7e7c2eb51de4738f4ece578ecf3ec644dec43fed
SHA256

b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343
SHA512

84ca3bde58321b9e35766aabdda18e85bdea053d96ae319124c8d4e17d24db9e7f530ccec89812dd40f623e0b790cf8ace79ea65e52f2ddf66c42c1d62813c05
SSDEEP

3072:Tjf3wRqQxKvxnsRcaCccfbcNMVkd6KLhNy7kBFTcIrHSysEKf8EzEu56K0ia:fPeyxTnVkwKL3fT9yynKDe

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	tazebama.dl_

Executes dropped EXE 1 IoCs

pid	Process
2536	tazebama.dl_

Loads dropped DLL 1 IoCs

pid	Process
4928	b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\software\WOW6432Node\Microsoft\Windows\CurrentVersion\run	tazebama.dl_

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\X:	tazebama.dl_
File opened (read-only)	\??\W:	tazebama.dl_
File opened (read-only)	\??\S:	tazebama.dl_
File opened (read-only)	\??\P:	tazebama.dl_
File opened (read-only)	\??\O:	tazebama.dl_
File opened (read-only)	\??\L:	tazebama.dl_
File opened (read-only)	\??\H:	tazebama.dl_
File opened (read-only)	\??\Y:	tazebama.dl_
File opened (read-only)	\??\V:	tazebama.dl_
File opened (read-only)	\??\N:	tazebama.dl_
File opened (read-only)	\??\G:	tazebama.dl_
File opened (read-only)	\??\E:	tazebama.dl_
File opened (read-only)	\??\U:	tazebama.dl_
File opened (read-only)	\??\Q:	tazebama.dl_
File opened (read-only)	\??\M:	tazebama.dl_
File opened (read-only)	\??\K:	tazebama.dl_
File opened (read-only)	\??\J:	tazebama.dl_
File opened (read-only)	\??\Z:	tazebama.dl_
File opened (read-only)	\??\T:	tazebama.dl_
File opened (read-only)	\??\R:	tazebama.dl_
File opened (read-only)	\??\I:	tazebama.dl_
File opened (read-only)	\??\F:	tazebama.dl_

Drops autorun.inf file 1 TTPs 2 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	C:\autorun.inf	tazebama.dl_
File opened for modification	C:\Documents and Settings\Admin\Local Settings\Application Data\Microsoft\CD Burning\autorun.inf	tazebama.dl_

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\PROGRAM FILES (X86)\ADOBE\ACROBAT READER DC\READER\ACRORD32.EXE	tazebama.dl_

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2148	2536	WerFault.exe	80
2296	2536	WerFault.exe	80

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2536	tazebama.dl_
2536	tazebama.dl_

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4928	b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4928	b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 2536	4928	b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343.exe	80
PID 4928 wrote to memory of 2536	4928	b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343.exe	80
PID 4928 wrote to memory of 2536	4928	b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343.exe	80
PID 2536 wrote to memory of 2148	2536	tazebama.dl_	83
PID 2536 wrote to memory of 2148	2536	tazebama.dl_	83
PID 2536 wrote to memory of 2148	2536	tazebama.dl_	83

C:\Users\Admin\AppData\Local\Temp\b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343.exe
"C:\Users\Admin\AppData\Local\Temp\b4d3d7308008aca2da46346cdeb226455645207a4224a36543261e0053a4d343.exe"
1⤵
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Documents and Settings\tazebama.dl_
  "C:\Documents and Settings\tazebama.dl_"
  2⤵
  - Modifies visibility of file extensions in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - Enumerates connected drives
  - Drops autorun.inf file
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2536
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2536 -s 728
    3⤵
    - Program crash
    PID:2148
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2536 -s 728
    3⤵
    - Program crash
    PID:2296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2536 -ip 2536
1⤵
PID:2888

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

1

T1091

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Documents and Settings\tazebama.dl_

Filesize
151KB

MD5
cfe942ff07118ffce480c4821a4e75bd

SHA1
9cdce58695a6ac5cb0101ff1fa824fafbaa206d6

SHA256
c18925fb78d66bf415c960af9f6958ef62d19bd6460e4a1a698d176a4278a243

SHA512
b89f023ffb378f5a0c32caff194810301ff9c7192e38675c212ecc76bee844a7b88f2fea0957121064df8eaa13b857ead483cb8bdb414fef5425a5d75a683bdd

Download Submit
C:\Users\tazebama.dl_

Filesize
151KB

MD5
cfe942ff07118ffce480c4821a4e75bd

SHA1
9cdce58695a6ac5cb0101ff1fa824fafbaa206d6

SHA256
c18925fb78d66bf415c960af9f6958ef62d19bd6460e4a1a698d176a4278a243

SHA512
b89f023ffb378f5a0c32caff194810301ff9c7192e38675c212ecc76bee844a7b88f2fea0957121064df8eaa13b857ead483cb8bdb414fef5425a5d75a683bdd

Download Submit
C:\Users\tazebama.dll

Filesize
32KB

MD5
b6a03576e595afacb37ada2f1d5a0529

SHA1
d598d4d0e70dec2ffa2849edaeb4db94fedcc0b8

SHA256
1707eaf60aa91f3791aa5643bfa038e9d8141878d61f5d701ebac51f4ae7aaad

SHA512
181b7cc6479352fe2c53c3630d45a839cdeb74708be6709c2a75847a54de3ffc1fdac8450270dde7174ecb23e5cb002f8ce39032429a3112b1202f3381b8918c

Download Submit
memory/2536-138-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4928-133-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4928-137-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads