8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32

General

Target

8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe
Size

92KB
MD5

984add71480cf5c831bc05a06e650f18
SHA1

f1efb5c08c2d43aefcc0bfe5535eea6ba3821b63
SHA256

8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32
SHA512

b644cf72c7f8ee18d81fdaa4b3088d30658e03931d26b28ec468c33067324671eb1347aea2125aaabfaf5fa7846797848877dcb667af438a493de63b81578cf7
SSDEEP

1536:1MIPgEm56wnbkKC2ZyBJU066lwLCRVEB+nR/y8cmNrEIviCOzuajkrDl9HNSi:11PgEOng1d66jRVa+n4NmNNouukrD7HI

Score

9^/10

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/2172-12-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2172-13-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2172-15-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2172-17-0x0000000010000000-0x0000000010022000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral2/memory/324-9-0x0000000000400000-0x0000000000428000-memory.dmp	UPX
behavioral2/files/0x0002000000022a48-10.dat	UPX
behavioral2/memory/2172-12-0x0000000010000000-0x0000000010022000-memory.dmp	UPX
behavioral2/memory/2172-13-0x0000000010000000-0x0000000010022000-memory.dmp	UPX
behavioral2/memory/2172-15-0x0000000010000000-0x0000000010022000-memory.dmp	UPX
behavioral2/memory/2172-17-0x0000000010000000-0x0000000010022000-memory.dmp	UPX

Blocklisted process makes network request 8 IoCs

flow	pid	Process
24	2172	rundll32.exe
31	2172	rundll32.exe
32	2172	rundll32.exe
33	2172	rundll32.exe
44	2172	rundll32.exe
47	2172	rundll32.exe
55	2172	rundll32.exe
74	2172	rundll32.exe

Deletes itself 1 IoCs

pid	Process
324	tmjiubotb.exe

Executes dropped EXE 1 IoCs

pid	Process
324	tmjiubotb.exe

Loads dropped DLL 1 IoCs

pid	Process
2172	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

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0002000000022a48-10.dat	upx
behavioral2/memory/2172-12-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/2172-13-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/2172-15-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/2172-17-0x0000000010000000-0x0000000010022000-memory.dmp	upx

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-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\lnonl\\wboaa.baw\",crc32"	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)	\??\i:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\h:	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)	\??\y:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	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

Kills process with taskkill 1 IoCs

evasion

pid	Process
4556	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3884	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2172	rundll32.exe
2172	rundll32.exe
2172	rundll32.exe
2172	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	rundll32.exe
Token: SeDebugPrivilege	4556	taskkill.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4856	8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe
324	tmjiubotb.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4856 wrote to memory of 2292	4856	8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe	90
PID 4856 wrote to memory of 2292	4856	8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe	90
PID 4856 wrote to memory of 2292	4856	8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe	90
PID 2292 wrote to memory of 3884	2292	cmd.exe	92
PID 2292 wrote to memory of 3884	2292	cmd.exe	92
PID 2292 wrote to memory of 3884	2292	cmd.exe	92
PID 2292 wrote to memory of 324	2292	cmd.exe	96
PID 2292 wrote to memory of 324	2292	cmd.exe	96
PID 2292 wrote to memory of 324	2292	cmd.exe	96
PID 324 wrote to memory of 2172	324	tmjiubotb.exe	97
PID 324 wrote to memory of 2172	324	tmjiubotb.exe	97
PID 324 wrote to memory of 2172	324	tmjiubotb.exe	97
PID 2172 wrote to memory of 4556	2172	rundll32.exe	98
PID 2172 wrote to memory of 4556	2172	rundll32.exe	98
PID 2172 wrote to memory of 4556	2172	rundll32.exe	98

C:\Users\Admin\AppData\Local\Temp\8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe
"C:\Users\Admin\AppData\Local\Temp\8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\tmjiubotb.exe "C:\Users\Admin\AppData\Local\Temp\8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2292
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:3884
- - C:\Users\Admin\AppData\Local\Temp\tmjiubotb.exe
    C:\Users\Admin\AppData\Local\Temp\\tmjiubotb.exe "C:\Users\Admin\AppData\Local\Temp\8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:324
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\lnonl\wboaa.baw",crc32 C:\Users\Admin\AppData\Local\Temp\tmjiubotb.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
      Suspicious use of WriteProcessMemory
      PID:2172
    - - \??\c:\windows\SysWOW64\taskkill.exe
        
        taskkill /f /im attrib.exe
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4556

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3804,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=4000 /prefetch:8
1⤵
PID:4856

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:\Users\Admin\AppData\Local\Temp\tmjiubotb.exe

Filesize
92KB

MD5
b5496dd6ea7d9decc892866acdbd989a

SHA1
e250e7aa4af3f08ba9f81d48d91ea3659c047021

SHA256
6c3c136541edcb861345a783968d0d042352f0400b1890650ddac3e57720c458

SHA512
bee3117cd11adb1fd52f7bc737a1134cfef27a8a25a4dd79ada7eb9e460e7b34e0e07b818e9678e9148ad72ccbe2c10e3d3ca3ae9c76525dc061f2d01fb6aedc

Download Submit
\??\c:\lnonl\wboaa.baw

Filesize
57KB

MD5
2f53f49e01f09d6e6064871eec1955cd

SHA1
a6e1a6e5c2080d0fb2f7a872e3902a8a4a1a9b5f

SHA256
964e4dd2532d540bb61d3c7ccc833f2358d8cd6b2eabc3a2d51183a18b59f82d

SHA512
2cb98030c3df7417c04f796f78f23f96d381871d9c7ae4a14116764e915b2e2f56b9b3a6fb76fedc50a17788de9538fc7954a7b73bf17e4be43e1fc1a06bc218

Download Submit
memory/324-7-0x00000000006F0000-0x0000000000722000-memory.dmp

Filesize
200KB

Download
memory/324-9-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2172-12-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/2172-13-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/2172-15-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/2172-17-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/4856-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4856-1-0x00000000005F0000-0x00000000005F1000-memory.dmp

Filesize
4KB

Download
memory/4856-3-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads