65bd1362d07966c52d70f287ac70732bd38c24fb6ea9c22d2500926c2a779f0d

Analysis

max time kernel
179s
max time network
197s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
02/11/2023, 21:24

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General

Target

NEAS.e8b5d05a4e47641da0f950dbb1942bd0_JC.exe
Size

287KB
MD5

e8b5d05a4e47641da0f950dbb1942bd0
SHA1

3ac752ec4ad6f6819f14c88edbee2c204f2a9a7d
SHA256

65bd1362d07966c52d70f287ac70732bd38c24fb6ea9c22d2500926c2a779f0d
SHA512

de875cfc94ab20279ad93b7b3a6452de37c4b59944fe525401f24693d8e1ad1b890118bce831e81e73ff2018b6bcfe79bdd61b5fd93b1b25efa7b8095a20fcc0
SSDEEP

6144:PDJTOrBBx22Cswe0YS1EMETItRp6NZXC5niAAr1nWyrRu8yXyLo+xVawofIkc:PDJTOh2jre81lET0yZXCBiAArpD1uwok

Score

8^/10

aspackv2 bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 7 IoCs

flow	pid	Process
3	2720	rundll32.exe
7	2720	rundll32.exe
8	2720	rundll32.exe
9	2720	rundll32.exe
10	2720	rundll32.exe
14	2720	rundll32.exe
15	2720	rundll32.exe

ASPack v2.12-2.42 9 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x000a000000012274-5.dat	aspack_v212_v242
behavioral1/files/0x000a000000012274-7.dat	aspack_v212_v242
behavioral1/files/0x000a000000012274-8.dat	aspack_v212_v242
behavioral1/files/0x000a000000012274-6.dat	aspack_v212_v242
behavioral1/files/0x002d0000000144bd-13.dat	aspack_v212_v242
behavioral1/files/0x002d0000000144bd-14.dat	aspack_v212_v242
behavioral1/files/0x002d0000000144bd-17.dat	aspack_v212_v242
behavioral1/files/0x002d0000000144bd-16.dat	aspack_v212_v242
behavioral1/files/0x002d0000000144bd-15.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
2764	unxjw.exe

Executes dropped EXE 1 IoCs

pid	Process
2764	unxjw.exe

Loads dropped DLL 6 IoCs

pid	Process
2712	cmd.exe
2712	cmd.exe
2720	rundll32.exe
2720	rundll32.exe
2720	rundll32.exe
2720	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-1-5-21-3425689832-2386927309-2650718742-1000\Software\Microsoft\Windows\CurrentVersion\Run\Micro = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\ksriu\\qurvs.dll\",method"	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)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\r:	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)	\??\e:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\w:	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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\ksriu	unxjw.exe
File created	\??\c:\Program Files\ksriu\qurvs.dll	unxjw.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
2752	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2720	rundll32.exe
2720	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1036	NEAS.e8b5d05a4e47641da0f950dbb1942bd0_JC.exe
2764	unxjw.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1036 wrote to memory of 2712	1036	NEAS.e8b5d05a4e47641da0f950dbb1942bd0_JC.exe	29
PID 1036 wrote to memory of 2712	1036	NEAS.e8b5d05a4e47641da0f950dbb1942bd0_JC.exe	29
PID 1036 wrote to memory of 2712	1036	NEAS.e8b5d05a4e47641da0f950dbb1942bd0_JC.exe	29
PID 1036 wrote to memory of 2712	1036	NEAS.e8b5d05a4e47641da0f950dbb1942bd0_JC.exe	29
PID 2712 wrote to memory of 2752	2712	cmd.exe	31
PID 2712 wrote to memory of 2752	2712	cmd.exe	31
PID 2712 wrote to memory of 2752	2712	cmd.exe	31
PID 2712 wrote to memory of 2752	2712	cmd.exe	31
PID 2712 wrote to memory of 2764	2712	cmd.exe	32
PID 2712 wrote to memory of 2764	2712	cmd.exe	32
PID 2712 wrote to memory of 2764	2712	cmd.exe	32
PID 2712 wrote to memory of 2764	2712	cmd.exe	32
PID 2764 wrote to memory of 2720	2764	unxjw.exe	33
PID 2764 wrote to memory of 2720	2764	unxjw.exe	33
PID 2764 wrote to memory of 2720	2764	unxjw.exe	33
PID 2764 wrote to memory of 2720	2764	unxjw.exe	33
PID 2764 wrote to memory of 2720	2764	unxjw.exe	33
PID 2764 wrote to memory of 2720	2764	unxjw.exe	33
PID 2764 wrote to memory of 2720	2764	unxjw.exe	33

C:\Users\Admin\AppData\Local\Temp\NEAS.e8b5d05a4e47641da0f950dbb1942bd0_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.e8b5d05a4e47641da0f950dbb1942bd0_JC.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1036
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\unxjw.exe "C:\Users\Admin\AppData\Local\Temp\NEAS.e8b5d05a4e47641da0f950dbb1942bd0_JC.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2712
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:2752
- - C:\Users\Admin\AppData\Local\Temp\unxjw.exe
    C:\Users\Admin\AppData\Local\Temp\\unxjw.exe "C:\Users\Admin\AppData\Local\Temp\NEAS.e8b5d05a4e47641da0f950dbb1942bd0_JC.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2764
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\ksriu\qurvs.dll",method C:\Users\Admin\AppData\Local\Temp\unxjw.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:2720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\unxjw.exe

Filesize
287KB

MD5
9be15b6882cf198c6dc028bf5aa87de9

SHA1
d2a28413690fc6e9ac7509e9aaa91641d791b1cb

SHA256
8d50a1a9b6510f57bdf8a9bca03be0e92438f91a37716d83cf742eae8561bfb9

SHA512
401091793420ee76097bee3c23259e808ecc5de34e1b7fbd9af323d27d64f2e45b987bc1a811f865ac95f2a7d232dab499fca7feadd94bae1a00ab360b41c925

Download Submit
C:\Users\Admin\AppData\Local\Temp\unxjw.exe

Filesize
287KB

MD5
9be15b6882cf198c6dc028bf5aa87de9

SHA1
d2a28413690fc6e9ac7509e9aaa91641d791b1cb

SHA256
8d50a1a9b6510f57bdf8a9bca03be0e92438f91a37716d83cf742eae8561bfb9

SHA512
401091793420ee76097bee3c23259e808ecc5de34e1b7fbd9af323d27d64f2e45b987bc1a811f865ac95f2a7d232dab499fca7feadd94bae1a00ab360b41c925

Download Submit
\??\c:\Program Files\ksriu\qurvs.dll

Filesize
245KB

MD5
620fb8a410c5b5966e209a4d24ace6ab

SHA1
36b0c5ac4dae626cc158e0834ba8beba5b118e83

SHA256
bebcee614582f9b640377874071ff6a0673c41c40cfad5448d30174236c93470

SHA512
fa3b3d7566d58ecc267edc14f90c000295a000e79ca78759eff97760e42c38c3fcaa9802f1f3875d40f26b5dd1a921e369948b445c42f8d2c219e8c1854ede67

Download Submit
\Program Files\ksriu\qurvs.dll

Filesize
245KB

MD5
620fb8a410c5b5966e209a4d24ace6ab

SHA1
36b0c5ac4dae626cc158e0834ba8beba5b118e83

SHA256
bebcee614582f9b640377874071ff6a0673c41c40cfad5448d30174236c93470

SHA512
fa3b3d7566d58ecc267edc14f90c000295a000e79ca78759eff97760e42c38c3fcaa9802f1f3875d40f26b5dd1a921e369948b445c42f8d2c219e8c1854ede67

Download Submit
\Program Files\ksriu\qurvs.dll

Filesize
245KB

MD5
620fb8a410c5b5966e209a4d24ace6ab

SHA1
36b0c5ac4dae626cc158e0834ba8beba5b118e83

SHA256
bebcee614582f9b640377874071ff6a0673c41c40cfad5448d30174236c93470

SHA512
fa3b3d7566d58ecc267edc14f90c000295a000e79ca78759eff97760e42c38c3fcaa9802f1f3875d40f26b5dd1a921e369948b445c42f8d2c219e8c1854ede67

Download Submit
\Program Files\ksriu\qurvs.dll

Filesize
245KB

MD5
620fb8a410c5b5966e209a4d24ace6ab

SHA1
36b0c5ac4dae626cc158e0834ba8beba5b118e83

SHA256
bebcee614582f9b640377874071ff6a0673c41c40cfad5448d30174236c93470

SHA512
fa3b3d7566d58ecc267edc14f90c000295a000e79ca78759eff97760e42c38c3fcaa9802f1f3875d40f26b5dd1a921e369948b445c42f8d2c219e8c1854ede67

Download Submit
\Program Files\ksriu\qurvs.dll

Filesize
245KB

MD5
620fb8a410c5b5966e209a4d24ace6ab

SHA1
36b0c5ac4dae626cc158e0834ba8beba5b118e83

SHA256
bebcee614582f9b640377874071ff6a0673c41c40cfad5448d30174236c93470

SHA512
fa3b3d7566d58ecc267edc14f90c000295a000e79ca78759eff97760e42c38c3fcaa9802f1f3875d40f26b5dd1a921e369948b445c42f8d2c219e8c1854ede67

Download Submit
\Users\Admin\AppData\Local\Temp\unxjw.exe

Filesize
287KB

MD5
9be15b6882cf198c6dc028bf5aa87de9

SHA1
d2a28413690fc6e9ac7509e9aaa91641d791b1cb

SHA256
8d50a1a9b6510f57bdf8a9bca03be0e92438f91a37716d83cf742eae8561bfb9

SHA512
401091793420ee76097bee3c23259e808ecc5de34e1b7fbd9af323d27d64f2e45b987bc1a811f865ac95f2a7d232dab499fca7feadd94bae1a00ab360b41c925

Download Submit
\Users\Admin\AppData\Local\Temp\unxjw.exe

Filesize
287KB

MD5
9be15b6882cf198c6dc028bf5aa87de9

SHA1
d2a28413690fc6e9ac7509e9aaa91641d791b1cb

SHA256
8d50a1a9b6510f57bdf8a9bca03be0e92438f91a37716d83cf742eae8561bfb9

SHA512
401091793420ee76097bee3c23259e808ecc5de34e1b7fbd9af323d27d64f2e45b987bc1a811f865ac95f2a7d232dab499fca7feadd94bae1a00ab360b41c925

Download Submit
memory/1036-4-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1036-1-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1036-2-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1036-0-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2720-18-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2720-33-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2720-21-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2720-23-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2720-25-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2720-27-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2720-43-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2720-42-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2720-40-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2720-29-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2720-19-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/2764-9-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2764-10-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2764-12-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download