e1e5a5d10b8ee789b280853266360876a3e3c3c2e405e3b0505198cd1ee17416

Analysis

max time kernel
142s
max time network
147s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
16/10/2023, 18:22

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General

Target

NEAS.619e334abeb792bf027086bc1af57fa0.exe
Size

430KB
MD5

619e334abeb792bf027086bc1af57fa0
SHA1

1aa718fb7d9b727aa0580abe479a65a36531900e
SHA256

e1e5a5d10b8ee789b280853266360876a3e3c3c2e405e3b0505198cd1ee17416
SHA512

df99759b3ad45a6e9fe3dda34acdcbe9f27da7d0cf7e6609426af1cc7a1a2e9c5b3a0f8c3b55294607bc84cada41c7f90a65498fd3ced5e1246b98a788621ea8
SSDEEP

3072:nQC+GgmYA/npAwfkBEcBoUTqp8YVE83jy11BGWjyLmar5FCO3ztKSwni9JCa2i:nQmgmYA/npALBBo4q2YXAyL1L3BYq

Score

7^/10

bootkit persistence spyware stealer upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2984	chslw.exe

Executes dropped EXE 2 IoCs

pid	Process
2984	chslw.exe
2092	pyzqjb.exe

Loads dropped DLL 7 IoCs

pid	Process
1892	cmd.exe
1892	cmd.exe
2984	chslw.exe
2092	pyzqjb.exe
2092	pyzqjb.exe
2092	pyzqjb.exe
2092	pyzqjb.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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2208-0-0x0000000000400000-0x0000000000469000-memory.dmp	upx
behavioral1/memory/2208-2-0x0000000000400000-0x0000000000469000-memory.dmp	upx
behavioral1/files/0x00070000000120e3-3.dat	upx
behavioral1/files/0x00070000000120e3-5.dat	upx
behavioral1/files/0x00070000000120e3-4.dat	upx
behavioral1/memory/2984-9-0x0000000000400000-0x0000000000469000-memory.dmp	upx
behavioral1/files/0x00070000000120e3-7.dat	upx
behavioral1/memory/2984-16-0x0000000000400000-0x0000000000469000-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-1-5-21-686452656-3203474025-4140627569-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\ncsbybx\\pyzqjb.exe \"c:\\Program Files\\ncsbybx\\pyzqjb.dll\",Compliance"	pyzqjb.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)	\??\i:	pyzqjb.exe
File opened (read-only)	\??\n:	pyzqjb.exe
File opened (read-only)	\??\o:	pyzqjb.exe
File opened (read-only)	\??\z:	pyzqjb.exe
File opened (read-only)	\??\r:	pyzqjb.exe
File opened (read-only)	\??\s:	pyzqjb.exe
File opened (read-only)	\??\x:	pyzqjb.exe
File opened (read-only)	\??\y:	pyzqjb.exe
File opened (read-only)	\??\m:	pyzqjb.exe
File opened (read-only)	\??\p:	pyzqjb.exe
File opened (read-only)	\??\q:	pyzqjb.exe
File opened (read-only)	\??\e:	pyzqjb.exe
File opened (read-only)	\??\h:	pyzqjb.exe
File opened (read-only)	\??\j:	pyzqjb.exe
File opened (read-only)	\??\k:	pyzqjb.exe
File opened (read-only)	\??\l:	pyzqjb.exe
File opened (read-only)	\??\t:	pyzqjb.exe
File opened (read-only)	\??\v:	pyzqjb.exe
File opened (read-only)	\??\w:	pyzqjb.exe
File opened (read-only)	\??\a:	pyzqjb.exe
File opened (read-only)	\??\b:	pyzqjb.exe
File opened (read-only)	\??\g:	pyzqjb.exe
File opened (read-only)	\??\u:	pyzqjb.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	pyzqjb.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\ncsbybx	chslw.exe
File created	\??\c:\Program Files\ncsbybx\pyzqjb.dll	chslw.exe
File created	\??\c:\Program Files\ncsbybx\pyzqjb.exe	chslw.exe
File opened for modification	\??\c:\Program Files\ncsbybx\pyzqjb.exe	chslw.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	pyzqjb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	pyzqjb.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2236	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2092	pyzqjb.exe
2092	pyzqjb.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2092	pyzqjb.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2208	NEAS.619e334abeb792bf027086bc1af57fa0.exe
2984	chslw.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 1892	2208	NEAS.619e334abeb792bf027086bc1af57fa0.exe	28
PID 2208 wrote to memory of 1892	2208	NEAS.619e334abeb792bf027086bc1af57fa0.exe	28
PID 2208 wrote to memory of 1892	2208	NEAS.619e334abeb792bf027086bc1af57fa0.exe	28
PID 2208 wrote to memory of 1892	2208	NEAS.619e334abeb792bf027086bc1af57fa0.exe	28
PID 1892 wrote to memory of 2236	1892	cmd.exe	30
PID 1892 wrote to memory of 2236	1892	cmd.exe	30
PID 1892 wrote to memory of 2236	1892	cmd.exe	30
PID 1892 wrote to memory of 2236	1892	cmd.exe	30
PID 1892 wrote to memory of 2984	1892	cmd.exe	31
PID 1892 wrote to memory of 2984	1892	cmd.exe	31
PID 1892 wrote to memory of 2984	1892	cmd.exe	31
PID 1892 wrote to memory of 2984	1892	cmd.exe	31
PID 2984 wrote to memory of 2092	2984	chslw.exe	32
PID 2984 wrote to memory of 2092	2984	chslw.exe	32
PID 2984 wrote to memory of 2092	2984	chslw.exe	32
PID 2984 wrote to memory of 2092	2984	chslw.exe	32

C:\Users\Admin\AppData\Local\Temp\NEAS.619e334abeb792bf027086bc1af57fa0.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.619e334abeb792bf027086bc1af57fa0.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\chslw.exe "C:\Users\Admin\AppData\Local\Temp\NEAS.619e334abeb792bf027086bc1af57fa0.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1892
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:2236
- - C:\Users\Admin\AppData\Local\Temp\chslw.exe
    C:\Users\Admin\AppData\Local\Temp\\chslw.exe "C:\Users\Admin\AppData\Local\Temp\NEAS.619e334abeb792bf027086bc1af57fa0.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2984
  - - \??\c:\Program Files\ncsbybx\pyzqjb.exe
      "c:\Program Files\ncsbybx\pyzqjb.exe" "c:\Program Files\ncsbybx\pyzqjb.dll",Compliance C:\Users\Admin\AppData\Local\Temp\chslw.exe
      4⤵
      Executes dropped EXE
      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:2092

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:\Program Files\ncsbybx\pyzqjb.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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

Filesize
431KB

MD5
0c6f91636915ac569a52f9f1c9651737

SHA1
6f1178aae1f55dc5afbae836c1d3102b0305d407

SHA256
a19c47d0329c57627154656de0adc19ad794b09a4dfc6487f47003f046cc87d4

SHA512
cf0fe94805615b1cd6e48ca4cec7a38cfe521e6fb1c161323ab78152251fef1d0abc8767f1841964b350bb9c19fcd322d8576545f04c0960de29fffe115c6183

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

Filesize
431KB

MD5
0c6f91636915ac569a52f9f1c9651737

SHA1
6f1178aae1f55dc5afbae836c1d3102b0305d407

SHA256
a19c47d0329c57627154656de0adc19ad794b09a4dfc6487f47003f046cc87d4

SHA512
cf0fe94805615b1cd6e48ca4cec7a38cfe521e6fb1c161323ab78152251fef1d0abc8767f1841964b350bb9c19fcd322d8576545f04c0960de29fffe115c6183

Download Submit
\??\c:\Program Files\ncsbybx\pyzqjb.dll

Filesize
141KB

MD5
382478e2075a1f5fe1f8a69296a67491

SHA1
72219f53ce644c1eb8ee20fd7e9daa1d2d39b42a

SHA256
fb6e8307f6f026dd154f290b9b87ce4741b0b0aec4eeaef3b5d4b71f2849c43f

SHA512
f64f59d4e8f96b86c25e49f4905c2247c22098686a8436a3c6589de84121af6987d3155ceda51498de2a4dd77743e5d859087b47bf53b23a7c03e46599a339af

Download Submit
\??\c:\Program Files\ncsbybx\pyzqjb.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\Program Files\ncsbybx\pyzqjb.dll

Filesize
141KB

MD5
382478e2075a1f5fe1f8a69296a67491

SHA1
72219f53ce644c1eb8ee20fd7e9daa1d2d39b42a

SHA256
fb6e8307f6f026dd154f290b9b87ce4741b0b0aec4eeaef3b5d4b71f2849c43f

SHA512
f64f59d4e8f96b86c25e49f4905c2247c22098686a8436a3c6589de84121af6987d3155ceda51498de2a4dd77743e5d859087b47bf53b23a7c03e46599a339af

Download Submit
\Program Files\ncsbybx\pyzqjb.dll

Filesize
141KB

MD5
382478e2075a1f5fe1f8a69296a67491

SHA1
72219f53ce644c1eb8ee20fd7e9daa1d2d39b42a

SHA256
fb6e8307f6f026dd154f290b9b87ce4741b0b0aec4eeaef3b5d4b71f2849c43f

SHA512
f64f59d4e8f96b86c25e49f4905c2247c22098686a8436a3c6589de84121af6987d3155ceda51498de2a4dd77743e5d859087b47bf53b23a7c03e46599a339af

Download Submit
\Program Files\ncsbybx\pyzqjb.dll

Filesize
141KB

MD5
382478e2075a1f5fe1f8a69296a67491

SHA1
72219f53ce644c1eb8ee20fd7e9daa1d2d39b42a

SHA256
fb6e8307f6f026dd154f290b9b87ce4741b0b0aec4eeaef3b5d4b71f2849c43f

SHA512
f64f59d4e8f96b86c25e49f4905c2247c22098686a8436a3c6589de84121af6987d3155ceda51498de2a4dd77743e5d859087b47bf53b23a7c03e46599a339af

Download Submit
\Program Files\ncsbybx\pyzqjb.dll

Filesize
141KB

MD5
382478e2075a1f5fe1f8a69296a67491

SHA1
72219f53ce644c1eb8ee20fd7e9daa1d2d39b42a

SHA256
fb6e8307f6f026dd154f290b9b87ce4741b0b0aec4eeaef3b5d4b71f2849c43f

SHA512
f64f59d4e8f96b86c25e49f4905c2247c22098686a8436a3c6589de84121af6987d3155ceda51498de2a4dd77743e5d859087b47bf53b23a7c03e46599a339af

Download Submit
\Program Files\ncsbybx\pyzqjb.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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

Filesize
431KB

MD5
0c6f91636915ac569a52f9f1c9651737

SHA1
6f1178aae1f55dc5afbae836c1d3102b0305d407

SHA256
a19c47d0329c57627154656de0adc19ad794b09a4dfc6487f47003f046cc87d4

SHA512
cf0fe94805615b1cd6e48ca4cec7a38cfe521e6fb1c161323ab78152251fef1d0abc8767f1841964b350bb9c19fcd322d8576545f04c0960de29fffe115c6183

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

Filesize
431KB

MD5
0c6f91636915ac569a52f9f1c9651737

SHA1
6f1178aae1f55dc5afbae836c1d3102b0305d407

SHA256
a19c47d0329c57627154656de0adc19ad794b09a4dfc6487f47003f046cc87d4

SHA512
cf0fe94805615b1cd6e48ca4cec7a38cfe521e6fb1c161323ab78152251fef1d0abc8767f1841964b350bb9c19fcd322d8576545f04c0960de29fffe115c6183

Download Submit
memory/1892-8-0x0000000000260000-0x00000000002C9000-memory.dmp

Filesize
420KB

Download
memory/1892-6-0x0000000000260000-0x00000000002C9000-memory.dmp

Filesize
420KB

Download
memory/2092-23-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2092-24-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2092-25-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2092-30-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2092-33-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2208-0-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/2208-2-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/2984-16-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/2984-9-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download