c00db06899777ec6a16569e0d22f69920128a30dcca4c327acbe9418aac922f2

General

Target

NEAS.ea35d0104dad481726044d5955af9910.exe
Size

95KB
MD5

ea35d0104dad481726044d5955af9910
SHA1

9a6518ae46c8c190d80847116056a43058b85a92
SHA256

c00db06899777ec6a16569e0d22f69920128a30dcca4c327acbe9418aac922f2
SHA512

d51a33c4e2befa51d104b251869323a9f03ba54470089cbabf14906cf0fd13e6cd7382a4ddc371f21652953b48bff9db449cda931d7af1f3a638c0d6698bcdea
SSDEEP

1536:2SSABNx6vb4RoI4mwRyAEd0tA6O+taBpDmuZfHEXmOoPIVK:tSABNx6vb4RoI4mwRxO0tA6vGsa6cPIQ

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
34	2684	rundll32.exe
43	2684	rundll32.exe
44	2684	rundll32.exe
45	2684	rundll32.exe
68	2684	rundll32.exe
69	2684	rundll32.exe
80	2684	rundll32.exe
81	2684	rundll32.exe

Deletes itself 1 IoCs

pid	Process
468	nzcuf.exe

Executes dropped EXE 1 IoCs

pid	Process
468	nzcuf.exe

Loads dropped DLL 1 IoCs

pid	Process
2684	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-1-5-21-177160434-2093019976-369403398-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\osjjr\\sysyoeytc.dll\",DoVirusScan"	rundll32.exe

Enumerates connected drives 3 TTPs 23 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)	\??\e:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\z:	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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2604	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2684	rundll32.exe
2684	rundll32.exe
2684	rundll32.exe
2684	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2684	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3824	NEAS.ea35d0104dad481726044d5955af9910.exe
468	nzcuf.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3824 wrote to memory of 4184	3824	NEAS.ea35d0104dad481726044d5955af9910.exe	86
PID 3824 wrote to memory of 4184	3824	NEAS.ea35d0104dad481726044d5955af9910.exe	86
PID 3824 wrote to memory of 4184	3824	NEAS.ea35d0104dad481726044d5955af9910.exe	86
PID 4184 wrote to memory of 2604	4184	cmd.exe	88
PID 4184 wrote to memory of 2604	4184	cmd.exe	88
PID 4184 wrote to memory of 2604	4184	cmd.exe	88
PID 4184 wrote to memory of 468	4184	cmd.exe	92
PID 4184 wrote to memory of 468	4184	cmd.exe	92
PID 4184 wrote to memory of 468	4184	cmd.exe	92
PID 468 wrote to memory of 2684	468	nzcuf.exe	93
PID 468 wrote to memory of 2684	468	nzcuf.exe	93
PID 468 wrote to memory of 2684	468	nzcuf.exe	93

C:\Users\Admin\AppData\Local\Temp\NEAS.ea35d0104dad481726044d5955af9910.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.ea35d0104dad481726044d5955af9910.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3824
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\nzcuf.exe "C:\Users\Admin\AppData\Local\Temp\NEAS.ea35d0104dad481726044d5955af9910.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4184
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:2604
- - \??\c:\nzcuf.exe
    c:\nzcuf.exe "C:\Users\Admin\AppData\Local\Temp\NEAS.ea35d0104dad481726044d5955af9910.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:468
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\osjjr\sysyoeytc.dll",DoVirusScan c:\nzcuf.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:2684

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:\nzcuf.exe

Filesize
95KB

MD5
af382c8bad375e71f386d2a2fbe62c39

SHA1
c45588f312daf87f36010772d3b31c5396d4a57c

SHA256
59b51b5d87777555abbabb5d0b576035d7333bb455d5b18899eabdf2c644a243

SHA512
70a74dbc8ab3802e7bf0e0164ee670c1fbb2cc18a9d2b2479999e6931b0fbf0ba09fc67d8598d599b97080aa602a2c499fb985df9846aa5c48fe25e4b48e7500

Download Submit
C:\osjjr\sysyoeytc.dll

Filesize
57KB

MD5
d44df003cd7b4ddc2b58f66d6af9894a

SHA1
165234b8432fa410af2e16a286fea52a664bcd46

SHA256
3f60f5b141fed70c9db160df1b34aa28c62d9aae480029bee14fbe1f635e07e8

SHA512
695266ae7c913291d060c9a7522283d9f113aa05f4105000ec5cd02fb0a102ec74aeee67ad5d660504c1d84c4d2b0eb36de1d551d1aa8bb3b8f06d4a5e509796

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

Filesize
95KB

MD5
af382c8bad375e71f386d2a2fbe62c39

SHA1
c45588f312daf87f36010772d3b31c5396d4a57c

SHA256
59b51b5d87777555abbabb5d0b576035d7333bb455d5b18899eabdf2c644a243

SHA512
70a74dbc8ab3802e7bf0e0164ee670c1fbb2cc18a9d2b2479999e6931b0fbf0ba09fc67d8598d599b97080aa602a2c499fb985df9846aa5c48fe25e4b48e7500

Download Submit
\??\c:\osjjr\sysyoeytc.dll

Filesize
57KB

MD5
d44df003cd7b4ddc2b58f66d6af9894a

SHA1
165234b8432fa410af2e16a286fea52a664bcd46

SHA256
3f60f5b141fed70c9db160df1b34aa28c62d9aae480029bee14fbe1f635e07e8

SHA512
695266ae7c913291d060c9a7522283d9f113aa05f4105000ec5cd02fb0a102ec74aeee67ad5d660504c1d84c4d2b0eb36de1d551d1aa8bb3b8f06d4a5e509796

Download Submit
memory/468-7-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2684-10-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2684-11-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2684-13-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2684-14-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2684-15-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2684-17-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2684-19-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2684-25-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3824-0-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3824-2-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads