c5559e4a20c5919a43130c4cec6268c1f4b44fbb82342e91571c3ca955c50e4f

General

Target

NEAS.bb7f6731d4ab64cc65ebcbcbfaa64ff0.exe
Size

133KB
MD5

bb7f6731d4ab64cc65ebcbcbfaa64ff0
SHA1

d6d29b7b1166fad2d1bd3ca85380065af0a7c5d4
SHA256

c5559e4a20c5919a43130c4cec6268c1f4b44fbb82342e91571c3ca955c50e4f
SHA512

08776c44a429d592adf7ca13e6ac100c4a0da25156275ea9abc7067db988c9f52d667de9ca753415804a09114224251474e016c0e74d859aeb7322dbdb380705
SSDEEP

1536:+fxvtgixq7OstjzjW6ZdjtETzR77i11GAbRp0BGiEA0O0o9:+HIa6KTdNAbzSGiN0OJ9

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
28	1568	rundll32.exe
39	1568	rundll32.exe
43	1568	rundll32.exe
44	1568	rundll32.exe
51	1568	rundll32.exe
53	1568	rundll32.exe
57	1568	rundll32.exe
61	1568	rundll32.exe

Deletes itself 1 IoCs

pid	Process
1552	ztlfi.exe

Executes dropped EXE 1 IoCs

pid	Process
1552	ztlfi.exe

Loads dropped DLL 1 IoCs

pid	Process
1568	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\aauvr\\ywwpuvww.dll\",GetWindowClass"	rundll32.exe

Enumerates connected drives 3 TTPs 2 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)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4496	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1568	rundll32.exe
1568	rundll32.exe
1568	rundll32.exe
1568	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1568	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4880	NEAS.bb7f6731d4ab64cc65ebcbcbfaa64ff0.exe
1552	ztlfi.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4880 wrote to memory of 4056	4880	NEAS.bb7f6731d4ab64cc65ebcbcbfaa64ff0.exe	88
PID 4880 wrote to memory of 4056	4880	NEAS.bb7f6731d4ab64cc65ebcbcbfaa64ff0.exe	88
PID 4880 wrote to memory of 4056	4880	NEAS.bb7f6731d4ab64cc65ebcbcbfaa64ff0.exe	88
PID 4056 wrote to memory of 4496	4056	cmd.exe	90
PID 4056 wrote to memory of 4496	4056	cmd.exe	90
PID 4056 wrote to memory of 4496	4056	cmd.exe	90
PID 4056 wrote to memory of 1552	4056	cmd.exe	91
PID 4056 wrote to memory of 1552	4056	cmd.exe	91
PID 4056 wrote to memory of 1552	4056	cmd.exe	91
PID 1552 wrote to memory of 1568	1552	ztlfi.exe	92
PID 1552 wrote to memory of 1568	1552	ztlfi.exe	92
PID 1552 wrote to memory of 1568	1552	ztlfi.exe	92

C:\Users\Admin\AppData\Local\Temp\NEAS.bb7f6731d4ab64cc65ebcbcbfaa64ff0.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.bb7f6731d4ab64cc65ebcbcbfaa64ff0.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4880
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\ztlfi.exe "C:\Users\Admin\AppData\Local\Temp\NEAS.bb7f6731d4ab64cc65ebcbcbfaa64ff0.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4056
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:4496
- - \??\c:\ztlfi.exe
    c:\ztlfi.exe "C:\Users\Admin\AppData\Local\Temp\NEAS.bb7f6731d4ab64cc65ebcbcbfaa64ff0.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1552
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\aauvr\ywwpuvww.dll",GetWindowClass c:\ztlfi.exe
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\aauvr\ywwpuvww.dll

Filesize
63KB

MD5
bec93912524f50c6f7c943716c7ef02b

SHA1
69ba8f1dd5a7d6cd94d688c691406cbd54be4486

SHA256
032570414587af2303431e8db5d5f4223e0147f4b63a2160b97d9a6ea531bd81

SHA512
41fb8970e9007c789227740e81a483bda806470ce25476589a3dfceddaaa60b20d890c37b56f8be83defb2a5b774dbd6c2026fc259884e8acf2971b06041f6a6

Download Submit
C:\ztlfi.exe

Filesize
133KB

MD5
372abcb5d2482635e787edfdcfa69752

SHA1
74e21a9dacafeac53b6dd0fbf3370d501b88b285

SHA256
26b040ef0635c63b1025b976a7fa4fb1aa7f42f6f06c39ce5db9f4cb64490831

SHA512
a0de03a2c651d4660e85ed097b5206a7c8b7bd61d022d9f652b1aef10c0a30814343f9662998f4d91b375890cccf19cbe969a08d284421aa9826eab19786356d

Download Submit
\??\c:\aauvr\ywwpuvww.dll

Filesize
63KB

MD5
bec93912524f50c6f7c943716c7ef02b

SHA1
69ba8f1dd5a7d6cd94d688c691406cbd54be4486

SHA256
032570414587af2303431e8db5d5f4223e0147f4b63a2160b97d9a6ea531bd81

SHA512
41fb8970e9007c789227740e81a483bda806470ce25476589a3dfceddaaa60b20d890c37b56f8be83defb2a5b774dbd6c2026fc259884e8acf2971b06041f6a6

Download Submit
\??\c:\ztlfi.exe

Filesize
133KB

MD5
372abcb5d2482635e787edfdcfa69752

SHA1
74e21a9dacafeac53b6dd0fbf3370d501b88b285

SHA256
26b040ef0635c63b1025b976a7fa4fb1aa7f42f6f06c39ce5db9f4cb64490831

SHA512
a0de03a2c651d4660e85ed097b5206a7c8b7bd61d022d9f652b1aef10c0a30814343f9662998f4d91b375890cccf19cbe969a08d284421aa9826eab19786356d

Download Submit
memory/1552-7-0x0000000000400000-0x0000000000425400-memory.dmp

Filesize
149KB

Download
memory/1568-11-0x0000000000E40000-0x0000000000E42000-memory.dmp

Filesize
8KB

Download
memory/1568-10-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/1568-12-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/1568-13-0x0000000000E40000-0x0000000000E42000-memory.dmp

Filesize
8KB

Download
memory/1568-17-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/1568-18-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/1568-19-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/4880-0-0x0000000000400000-0x0000000000425400-memory.dmp

Filesize
149KB

Download
memory/4880-2-0x0000000000400000-0x0000000000425400-memory.dmp

Filesize
149KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads