systembc | 06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77

Resubmissions

18/04/2024, 11:46

240418-nxbcraca3410

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
1200s
max time network
1207s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 11:45

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General

Target
06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
Size 192KB
Sample240418-nw8a4adb71
SHA256 06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77
MD5 610b4e85369410c52cd2c1f1c1b304ae
SHA1 1a1288380b4abddb9830ff22541583ba66f76f2c
SHA512 46deda3922aff6aed04591aac09be1408798fc8e6d58ace5f9dca92ec33583b86ecf4b1fe52696f8128fd50cc27f14485cdc1bd51339788964d39f323d171c3a
SSDEEP 3072:rf1BDZ0kVB67Duw9AMc+bP1Yf0wK8F78CrLFOmvJfnah+vbkWS90tqNu/mOspgI:r9X0GgP1k0I84Loafnah+TJqNfppJ
MD5 SHA1 SHA512 SSDEEP

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 20 IoCs

pid	Process
3496	juxqx.exe
4468	juxqx.exe
2556	juxqx.exe
4952	juxqx.exe
2452	juxqx.exe
2980	juxqx.exe
1848	juxqx.exe
3548	juxqx.exe
4628	juxqx.exe
4700	juxqx.exe
416	juxqx.exe
3568	juxqx.exe
1324	juxqx.exe
1476	juxqx.exe
4164	juxqx.exe
2560	juxqx.exe
3496	juxqx.exe
2248	juxqx.exe
1384	juxqx.exe
3704	juxqx.exe

Loads dropped DLL 11 IoCs

pid	Process
4660	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
3496	juxqx.exe
2556	juxqx.exe
2452	juxqx.exe
1848	juxqx.exe
4628	juxqx.exe
416	juxqx.exe
1324	juxqx.exe
4164	juxqx.exe
3496	juxqx.exe
1384	juxqx.exe

Looks up external IP address via web service 2 IoCs

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

flow	ioc
40	api.ipify.org
38	api.ipify.org

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

Proxy
T1090

Drops file in System32 directory 10 IoCs

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

Suspicious use of SetThreadContext 11 IoCs

description	pid	Process	procid_target
PID 4660 set thread context of 3196	4660	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	95
PID 3496 set thread context of 4468	3496	juxqx.exe	102
PID 2556 set thread context of 4952	2556	juxqx.exe	104
PID 2452 set thread context of 2980	2452	juxqx.exe	106
PID 1848 set thread context of 3548	1848	juxqx.exe	108
PID 4628 set thread context of 4700	4628	juxqx.exe	111
PID 416 set thread context of 3568	416	juxqx.exe	113
PID 1324 set thread context of 1476	1324	juxqx.exe	115
PID 4164 set thread context of 2560	4164	juxqx.exe	118
PID 3496 set thread context of 2248	3496	juxqx.exe	120
PID 1384 set thread context of 3704	1384	juxqx.exe	122

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\juxqx.job	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
File opened for modification	C:\Windows\Tasks\juxqx.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
behavioral4/files/0x0007000000023285-15.dat	nsis_installer_1
behavioral4/files/0x0007000000023285-15.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3196	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
3196	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe

Suspicious behavior: MapViewOfSection 11 IoCs

pid	Process
4660	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe
3496	juxqx.exe
2556	juxqx.exe
2452	juxqx.exe
1848	juxqx.exe
4628	juxqx.exe
416	juxqx.exe
1324	juxqx.exe
4164	juxqx.exe
3496	juxqx.exe
1384	juxqx.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 4660 wrote to memory of 3196	4660	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	95
PID 4660 wrote to memory of 3196	4660	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	95
PID 4660 wrote to memory of 3196	4660	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	95
PID 4660 wrote to memory of 3196	4660	06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77.exe	95
PID 3496 wrote to memory of 4468	3496	juxqx.exe	102
PID 3496 wrote to memory of 4468	3496	juxqx.exe	102
PID 3496 wrote to memory of 4468	3496	juxqx.exe	102
PID 3496 wrote to memory of 4468	3496	juxqx.exe	102
PID 2556 wrote to memory of 4952	2556	juxqx.exe	104
PID 2556 wrote to memory of 4952	2556	juxqx.exe	104
PID 2556 wrote to memory of 4952	2556	juxqx.exe	104
PID 2556 wrote to memory of 4952	2556	juxqx.exe	104
PID 2452 wrote to memory of 2980	2452	juxqx.exe	106
PID 2452 wrote to memory of 2980	2452	juxqx.exe	106
PID 2452 wrote to memory of 2980	2452	juxqx.exe	106
PID 2452 wrote to memory of 2980	2452	juxqx.exe	106
PID 1848 wrote to memory of 3548	1848	juxqx.exe	108
PID 1848 wrote to memory of 3548	1848	juxqx.exe	108
PID 1848 wrote to memory of 3548	1848	juxqx.exe	108
PID 1848 wrote to memory of 3548	1848	juxqx.exe	108
PID 4628 wrote to memory of 4700	4628	juxqx.exe	111
PID 4628 wrote to memory of 4700	4628	juxqx.exe	111
PID 4628 wrote to memory of 4700	4628	juxqx.exe	111
PID 4628 wrote to memory of 4700	4628	juxqx.exe	111
PID 416 wrote to memory of 3568	416	juxqx.exe	113
PID 416 wrote to memory of 3568	416	juxqx.exe	113
PID 416 wrote to memory of 3568	416	juxqx.exe	113
PID 416 wrote to memory of 3568	416	juxqx.exe	113
PID 1324 wrote to memory of 1476	1324	juxqx.exe	115
PID 1324 wrote to memory of 1476	1324	juxqx.exe	115
PID 1324 wrote to memory of 1476	1324	juxqx.exe	115
PID 1324 wrote to memory of 1476	1324	juxqx.exe	115
PID 4164 wrote to memory of 2560	4164	juxqx.exe	118
PID 4164 wrote to memory of 2560	4164	juxqx.exe	118
PID 4164 wrote to memory of 2560	4164	juxqx.exe	118
PID 4164 wrote to memory of 2560	4164	juxqx.exe	118
PID 3496 wrote to memory of 2248	3496	juxqx.exe	120
PID 3496 wrote to memory of 2248	3496	juxqx.exe	120
PID 3496 wrote to memory of 2248	3496	juxqx.exe	120
PID 3496 wrote to memory of 2248	3496	juxqx.exe	120
PID 1384 wrote to memory of 3704	1384	juxqx.exe	122
PID 1384 wrote to memory of 3704	1384	juxqx.exe	122
PID 1384 wrote to memory of 3704	1384	juxqx.exe	122
PID 1384 wrote to memory of 3704	1384	juxqx.exe	122

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:4660
- 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:3196

C:\ProgramData\askkhre\juxqx.exe
C:\ProgramData\askkhre\juxqx.exe start
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3496
- C:\ProgramData\askkhre\juxqx.exe
  C:\ProgramData\askkhre\juxqx.exe start
  2⤵
  - Executes dropped EXE
  PID:4468

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 --mojo-platform-channel-handle=3548 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:3504

C:\ProgramData\askkhre\juxqx.exe
C:\ProgramData\askkhre\juxqx.exe start
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2556
- C:\ProgramData\askkhre\juxqx.exe
  C:\ProgramData\askkhre\juxqx.exe start
  2⤵
  - Executes dropped EXE
  PID:4952

C:\ProgramData\askkhre\juxqx.exe
C:\ProgramData\askkhre\juxqx.exe start
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2452
- C:\ProgramData\askkhre\juxqx.exe
  C:\ProgramData\askkhre\juxqx.exe start
  2⤵
  - Executes dropped EXE
  PID:2980

C:\ProgramData\askkhre\juxqx.exe
C:\ProgramData\askkhre\juxqx.exe start
1⤵
- 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\askkhre\juxqx.exe
  C:\ProgramData\askkhre\juxqx.exe start
  2⤵
  - Executes dropped EXE
  PID:3548

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 --mojo-platform-channel-handle=4020 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:1400

C:\ProgramData\askkhre\juxqx.exe
C:\ProgramData\askkhre\juxqx.exe start
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4628
- C:\ProgramData\askkhre\juxqx.exe
  C:\ProgramData\askkhre\juxqx.exe start
  2⤵
  - Executes dropped EXE
  PID:4700

C:\ProgramData\askkhre\juxqx.exe
C:\ProgramData\askkhre\juxqx.exe start
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:416
- C:\ProgramData\askkhre\juxqx.exe
  C:\ProgramData\askkhre\juxqx.exe start
  2⤵
  - Executes dropped EXE
  PID:3568

C:\ProgramData\askkhre\juxqx.exe
C:\ProgramData\askkhre\juxqx.exe start
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1324
- C:\ProgramData\askkhre\juxqx.exe
  C:\ProgramData\askkhre\juxqx.exe start
  2⤵
  - Executes dropped EXE
  PID:1476

C:\ProgramData\askkhre\juxqx.exe
C:\ProgramData\askkhre\juxqx.exe start
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4164
- C:\ProgramData\askkhre\juxqx.exe
  C:\ProgramData\askkhre\juxqx.exe start
  2⤵
  - Executes dropped EXE
  PID:2560

C:\ProgramData\askkhre\juxqx.exe
C:\ProgramData\askkhre\juxqx.exe start
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3496
- C:\ProgramData\askkhre\juxqx.exe
  C:\ProgramData\askkhre\juxqx.exe start
  2⤵
  - Executes dropped EXE
  PID:2248

C:\ProgramData\askkhre\juxqx.exe
C:\ProgramData\askkhre\juxqx.exe start
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1384
- C:\ProgramData\askkhre\juxqx.exe
  C:\ProgramData\askkhre\juxqx.exe start
  2⤵
  - Executes dropped EXE
  PID:3704

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

juxqx.exe

Path C:\ProgramData\askkhre\juxqx.exe
Size 192KB
SHA256 06063b690db71cc96cc36b528e7a8fa599046491f976e94615392975b96b0d77
MD5 610b4e85369410c52cd2c1f1c1b304ae
SHA1 1a1288380b4abddb9830ff22541583ba66f76f2c
SHA512 46deda3922aff6aed04591aac09be1408798fc8e6d58ace5f9dca92ec33583b86ecf4b1fe52696f8128fd50cc27f14485cdc1bd51339788964d39f323d171c3a
SSDEEP 3072:rf1BDZ0kVB67Duw9AMc+bP1Yf0wK8F78CrLFOmvJfnah+vbkWS90tqNu/mOspgI:r9X0GgP1k0I84Loafnah+TJqNfppJ
MD5 SHA1 SHA512 SSDEEP

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System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsp44F4.tmp\System.dll
Size 11KB
SHA256 6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e
MD5 fccff8cb7a1067e23fd2e2b63971a8e1
SHA1 30e2a9e137c1223a78a0f7b0bf96a1c361976d91
SHA512 f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c
SSDEEP 192:xPtkiQJr7V9r3HcU17S8g1w5xzWxy6j2V7i77blbTc4v:g7VpNo8gmOyRsVc4
MD5 SHA1 SHA512 SSDEEP

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528123

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\528123
Size 150KB
SHA256 cd2eb21478199118d1f113b8a5c36b3d3a7e19a4a7d963f48b8df14eba6ea10c
MD5 b76e1d1a677d5ab98d816c5fd5874e9e
SHA1 f7482d1b6b5e446f5d11848d40872f790ef671e3
SHA512 1ab74e04671abe7d685b6e7100a0a12b78cae00c3bd24c68f0ceebaf8924ee28bb582d4ef74bcd08c1f5e3a309e0468a845a630e118baf0f324a41c663d2a4be
SSDEEP 3072:91Yf0wK8/78CrLFOmnJfnah+vbF5jwl/qCkkMbVwgGcdvNu/mOA:91k0o84Logfnah+TF5jwXM6g3vNfP
MD5 SHA1 SHA512 SSDEEP

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memory/3196-6-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/3196-8-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/3196-10-0x0000000000400000-0x000000000040B000-memory.dmp

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