3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb

General

Target

3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe
Size

90KB
MD5

2028d19fdf91b38e6c8428af41fc9bd4
SHA1

333df9c2f10fc40c130c186d8537451ae166e8e9
SHA256

3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb
SHA512

023bc68a4e5928eb5ace07a8bc3935e294e649bcfe5c4c7e2b1846af9f8bbef145968480e5ee2b52c3b09c14a1210e61f75bd8b067306f9152d3b1e7cc62ea72
SSDEEP

1536:1MIPgEm56wnbkKC2ZyBJU066lwLCRVEB+nR/y8cmNrEIviCOzuajkrDl9HNSj1:11PgEOng1d66jRVa+n4NmNNouukrD7Hg

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
7	2860	rundll32.exe
8	2860	rundll32.exe
9	2860	rundll32.exe
10	2860	rundll32.exe
12	2860	rundll32.exe
13	2860	rundll32.exe
18	2860	rundll32.exe
22	2860	rundll32.exe

Deletes itself 1 IoCs

pid	Process
800	qjxin.exe

Executes dropped EXE 1 IoCs

pid	Process
800	qjxin.exe

Loads dropped DLL 1 IoCs

pid	Process
2860	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 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0009000000023437-10.dat	upx
behavioral2/memory/2860-12-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/2860-13-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/2860-15-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/2860-17-0x0000000010000000-0x0000000010022000-memory.dmp	upx
behavioral2/memory/2860-18-0x0000000010000000-0x0000000010022000-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-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\swral\\rfejagvk.fjr\",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)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	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
4284	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4676	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2860	rundll32.exe
2860	rundll32.exe
2860	rundll32.exe
2860	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	rundll32.exe
Token: SeDebugPrivilege	4284	taskkill.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2116	3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe
800	qjxin.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 2232	2116	3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe	84
PID 2116 wrote to memory of 2232	2116	3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe	84
PID 2116 wrote to memory of 2232	2116	3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe	84
PID 2232 wrote to memory of 4676	2232	cmd.exe	86
PID 2232 wrote to memory of 4676	2232	cmd.exe	86
PID 2232 wrote to memory of 4676	2232	cmd.exe	86
PID 2232 wrote to memory of 800	2232	cmd.exe	87
PID 2232 wrote to memory of 800	2232	cmd.exe	87
PID 2232 wrote to memory of 800	2232	cmd.exe	87
PID 800 wrote to memory of 2860	800	qjxin.exe	88
PID 800 wrote to memory of 2860	800	qjxin.exe	88
PID 800 wrote to memory of 2860	800	qjxin.exe	88
PID 2860 wrote to memory of 4284	2860	rundll32.exe	89
PID 2860 wrote to memory of 4284	2860	rundll32.exe	89
PID 2860 wrote to memory of 4284	2860	rundll32.exe	89

C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe
"C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\qjxin.exe "C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2232
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:4676
- - C:\Users\Admin\AppData\Local\Temp\qjxin.exe
    C:\Users\Admin\AppData\Local\Temp\\qjxin.exe "C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:800
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\swral\rfejagvk.fjr",crc32 C:\Users\Admin\AppData\Local\Temp\qjxin.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:2860
    - - \??\c:\windows\SysWOW64\taskkill.exe
        
        taskkill /f /im attrib.exe
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4284

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\qjxin.exe

Filesize
91KB

MD5
3396c4698a6dcf7cf15f866ba447b6e2

SHA1
4ce11d6ba51d704622646c6693c94a5771982839

SHA256
1c6d499cf5bee0626d4aa822327f5cfb62436e353647ed68780263b399d6d482

SHA512
6798cc8d412e00314fb50b86b70dd2515b459a9a2ec71b4f7e71972b50e53c8d8c40ff3cf9688c13dace61c615000ce9f2f2109032bdd390e1c97c6d5afcc577

Download Submit
\??\c:\swral\rfejagvk.fjr

Filesize
57KB

MD5
2f53f49e01f09d6e6064871eec1955cd

SHA1
a6e1a6e5c2080d0fb2f7a872e3902a8a4a1a9b5f

SHA256
964e4dd2532d540bb61d3c7ccc833f2358d8cd6b2eabc3a2d51183a18b59f82d

SHA512
2cb98030c3df7417c04f796f78f23f96d381871d9c7ae4a14116764e915b2e2f56b9b3a6fb76fedc50a17788de9538fc7954a7b73bf17e4be43e1fc1a06bc218

Download Submit
memory/800-7-0x0000000000C00000-0x0000000000C01000-memory.dmp

Filesize
4KB

Download
memory/800-9-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2116-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2116-1-0x0000000002220000-0x0000000002252000-memory.dmp

Filesize
200KB

Download
memory/2116-3-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2860-12-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/2860-13-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/2860-15-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/2860-17-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/2860-18-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads