systembc | 06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77

Resubmissions

18-04-2024 11:46

240418-nxbcraca34 10

18-04-2024 11:45

18-04-2024 11:45

18-04-2024 11:45

18-04-2024 11:45

18-04-2024 10:00

Analysis

max time kernel
299s
max time network
300s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
18-04-2024 11:45

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General

Target

06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
Size

192KB
MD5

610b4e85369410c52cd2c1f1c1b304ae
SHA1

1a1288380b4abddb9830ff22541583ba66f76f2c
SHA256

06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77
SHA512

46deda3922aff6aed04591aac09be1408798fc8e6d58ace5f9dca92ec33583b86ecf4b1fe52696f8128fd50cc27f14485cdc1bd51339788964d39f323d171c3a
SSDEEP

3072:rf1BDZ0kVB67Duw9AMc+bP1Yf0wK8F78CrLFOmvJfnah+vbkWS90tqNu/mOspgI:r9X0GgP1k0I84Loafnah+TJqNfppJ

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

172.104.63.157:4001

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc

Executes dropped EXE 6 IoCs

pid	Process
2748	pwphsqi.exe
2624	pwphsqi.exe
320	pwphsqi.exe
1556	pwphsqi.exe
1848	pwphsqi.exe
792	pwphsqi.exe

Loads dropped DLL 4 IoCs

pid	Process
1640	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
2748	pwphsqi.exe
320	pwphsqi.exe
1848	pwphsqi.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	api.ipify.org
5	api.ipify.org
6	ip4.seeip.org
7	ip4.seeip.org

Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Proxy
T1090

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\528123	pwphsqi.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\528123	pwphsqi.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\528123	pwphsqi.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1640 set thread context of 2928	1640	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	28
PID 2748 set thread context of 2624	2748	pwphsqi.exe	31
PID 320 set thread context of 1556	320	pwphsqi.exe	35
PID 1848 set thread context of 792	1848	pwphsqi.exe	37

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\pwphsqi.job	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
File opened for modification	C:\Windows\Tasks\pwphsqi.job	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral2/files/0x0007000000014171-15.dat	nsis_installer_1
behavioral2/files/0x0007000000014171-15.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2928	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
1640	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
2748	pwphsqi.exe
320	pwphsqi.exe
1848	pwphsqi.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2928	1640	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	28
PID 1640 wrote to memory of 2928	1640	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	28
PID 1640 wrote to memory of 2928	1640	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	28
PID 1640 wrote to memory of 2928	1640	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	28
PID 1640 wrote to memory of 2928	1640	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	28
PID 2700 wrote to memory of 2748	2700	taskeng.exe	30
PID 2700 wrote to memory of 2748	2700	taskeng.exe	30
PID 2700 wrote to memory of 2748	2700	taskeng.exe	30
PID 2700 wrote to memory of 2748	2700	taskeng.exe	30
PID 2748 wrote to memory of 2624	2748	pwphsqi.exe	31
PID 2748 wrote to memory of 2624	2748	pwphsqi.exe	31
PID 2748 wrote to memory of 2624	2748	pwphsqi.exe	31
PID 2748 wrote to memory of 2624	2748	pwphsqi.exe	31
PID 2748 wrote to memory of 2624	2748	pwphsqi.exe	31
PID 2700 wrote to memory of 320	2700	taskeng.exe	34
PID 2700 wrote to memory of 320	2700	taskeng.exe	34
PID 2700 wrote to memory of 320	2700	taskeng.exe	34
PID 2700 wrote to memory of 320	2700	taskeng.exe	34
PID 320 wrote to memory of 1556	320	pwphsqi.exe	35
PID 320 wrote to memory of 1556	320	pwphsqi.exe	35
PID 320 wrote to memory of 1556	320	pwphsqi.exe	35
PID 320 wrote to memory of 1556	320	pwphsqi.exe	35
PID 320 wrote to memory of 1556	320	pwphsqi.exe	35
PID 2700 wrote to memory of 1848	2700	taskeng.exe	36
PID 2700 wrote to memory of 1848	2700	taskeng.exe	36
PID 2700 wrote to memory of 1848	2700	taskeng.exe	36
PID 2700 wrote to memory of 1848	2700	taskeng.exe	36
PID 1848 wrote to memory of 792	1848	pwphsqi.exe	37
PID 1848 wrote to memory of 792	1848	pwphsqi.exe	37
PID 1848 wrote to memory of 792	1848	pwphsqi.exe	37
PID 1848 wrote to memory of 792	1848	pwphsqi.exe	37
PID 1848 wrote to memory of 792	1848	pwphsqi.exe	37

C:\Users\Admin\AppData\Local\Temp\06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
"C:\Users\Admin\AppData\Local\Temp\06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Users\Admin\AppData\Local\Temp\06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
  "C:\Users\Admin\AppData\Local\Temp\06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe"
  2⤵
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  PID:2928

C:\Windows\system32\taskeng.exe
taskeng.exe {8668F6A1-6182-4500-9D37-D4395DE07FBB} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2700
- C:\ProgramData\bftjxdr\pwphsqi.exe
  C:\ProgramData\bftjxdr\pwphsqi.exe start
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2748
- - C:\ProgramData\bftjxdr\pwphsqi.exe
    C:\ProgramData\bftjxdr\pwphsqi.exe start
    3⤵
    - Executes dropped EXE
    PID:2624
- C:\ProgramData\bftjxdr\pwphsqi.exe
  C:\ProgramData\bftjxdr\pwphsqi.exe start
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:320
- - C:\ProgramData\bftjxdr\pwphsqi.exe
    C:\ProgramData\bftjxdr\pwphsqi.exe start
    3⤵
    - Executes dropped EXE
    PID:1556
- C:\ProgramData\bftjxdr\pwphsqi.exe
  C:\ProgramData\bftjxdr\pwphsqi.exe start
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1848
- - C:\ProgramData\bftjxdr\pwphsqi.exe
    C:\ProgramData\bftjxdr\pwphsqi.exe start
    3⤵
    - Executes dropped EXE
    PID:792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Proxy

T1090

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\bftjxdr\pwphsqi.exe

Filesize
192KB

MD5
610b4e85369410c52cd2c1f1c1b304ae

SHA1
1a1288380b4abddb9830ff22541583ba66f76f2c

SHA256
06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77

SHA512
46deda3922aff6aed04591aac09be1408798fc8e6d58ace5f9dca92ec33583b86ecf4b1fe52696f8128fd50cc27f14485cdc1bd51339788964d39f323d171c3a

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\528123

Filesize
31KB

MD5
910fa54c66ea0b8a9d81f65db4d157c7

SHA1
a4839ffd8814cfe527775c108b99b68405ca049c

SHA256
27f101077dbb3ac5c3f465769ea2f978ae41bfe3e87f1f26377ddf98e35b9a25

SHA512
11afbbdfa4fb4c78ae26ec086beac7673fa0ae3691de6a9595053be697acf551800a7bbd2fff61754525ee91039f533604dd55476e85a3413bf43ba4b7f6a5d4

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\528123

Filesize
150KB

MD5
b76e1d1a677d5ab98d816c5fd5874e9e

SHA1
f7482d1b6b5e446f5d11848d40872f790ef671e3

SHA256
cd2eb21478199118d1f113b8a5c36b3d3a7e19a4a7d963f48b8df14eba6ea10c

SHA512
1ab74e04671abe7d685b6e7100a0a12b78cae00c3bd24c68f0ceebaf8924ee28bb582d4ef74bcd08c1f5e3a309e0468a845a630e118baf0f324a41c663d2a4be

Download Submit
\Users\Admin\AppData\Local\Temp\nstC32.tmp\System.dll

Filesize
11KB

MD5
fccff8cb7a1067e23fd2e2b63971a8e1

SHA1
30e2a9e137c1223a78a0f7b0bf96a1c361976d91

SHA256
6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

SHA512
f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

Download Submit
memory/2928-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2928-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2928-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download