systembc | 4235c78ffaf12c4e584666da54cfc5dc56412235f5a2d313dcac07d1314dd52e

Analysis

max time kernel
126s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 10:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Opdxdyeul.exe
Size

894KB
MD5

cee58644e824d57927fe73be837b1418
SHA1

698d1a11ab58852be004fd4668a6f25371621976
SHA256

4235c78ffaf12c4e584666da54cfc5dc56412235f5a2d313dcac07d1314dd52e
SHA512

ab9e9083ed107b5600f802ec66dab71f1064377749b6c874f8ce6e9ce5b2718a1dc45372b883943a8eae99378d1151ce15983d4c9be67d559cd72b28b9f55fb5
SSDEEP

12288:etFDEnlFaqLcsjwwdbriOXrWh+7SmCHK4A04KJeYtS1dFXuehyFJ97wQjGuNafNJ:6q9ctmHiCpd4FJe0oeehyjPiuNv/L

Score

10^/10

systembc discovery persistence trojan

Malware Config

Extracted

Family

systembc

claywyaeropumps.com

178.132.2.10

Attributes

dns
5.132.191.104

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	Opdxdyeul.exe

Executes dropped EXE 4 IoCs

pid	Process
1876	khglbrl.exe
2812	khglbrl.exe
3120	khglbrl.exe
4752	khglbrl.exe

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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Yjlwuuys = "C:\\Users\\Admin\\AppData\\Roaming\\Yjlwuuys.exe"	Opdxdyeul.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3620 set thread context of 740	3620	Opdxdyeul.exe	97
PID 1876 set thread context of 2812	1876	khglbrl.exe	102
PID 3120 set thread context of 4752	3120	khglbrl.exe	104

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Test Task17.job	Opdxdyeul.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Opdxdyeul.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	khglbrl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	khglbrl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Opdxdyeul.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3404	powershell.exe
3404	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3620	Opdxdyeul.exe
Token: SeDebugPrivilege	3404	powershell.exe
Token: SeDebugPrivilege	3620	Opdxdyeul.exe
Token: SeDebugPrivilege	1876	khglbrl.exe
Token: SeDebugPrivilege	1876	khglbrl.exe
Token: SeDebugPrivilege	3120	khglbrl.exe
Token: SeDebugPrivilege	3120	khglbrl.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3620 wrote to memory of 3404	3620	Opdxdyeul.exe	92
PID 3620 wrote to memory of 3404	3620	Opdxdyeul.exe	92
PID 3620 wrote to memory of 3404	3620	Opdxdyeul.exe	92
PID 3620 wrote to memory of 740	3620	Opdxdyeul.exe	97
PID 3620 wrote to memory of 740	3620	Opdxdyeul.exe	97
PID 3620 wrote to memory of 740	3620	Opdxdyeul.exe	97
PID 3620 wrote to memory of 740	3620	Opdxdyeul.exe	97
PID 3620 wrote to memory of 740	3620	Opdxdyeul.exe	97
PID 3620 wrote to memory of 740	3620	Opdxdyeul.exe	97
PID 3620 wrote to memory of 740	3620	Opdxdyeul.exe	97
PID 3620 wrote to memory of 740	3620	Opdxdyeul.exe	97
PID 1876 wrote to memory of 2812	1876	khglbrl.exe	102
PID 1876 wrote to memory of 2812	1876	khglbrl.exe	102
PID 1876 wrote to memory of 2812	1876	khglbrl.exe	102
PID 1876 wrote to memory of 2812	1876	khglbrl.exe	102
PID 1876 wrote to memory of 2812	1876	khglbrl.exe	102
PID 1876 wrote to memory of 2812	1876	khglbrl.exe	102
PID 1876 wrote to memory of 2812	1876	khglbrl.exe	102
PID 1876 wrote to memory of 2812	1876	khglbrl.exe	102
PID 3120 wrote to memory of 4752	3120	khglbrl.exe	104
PID 3120 wrote to memory of 4752	3120	khglbrl.exe	104
PID 3120 wrote to memory of 4752	3120	khglbrl.exe	104
PID 3120 wrote to memory of 4752	3120	khglbrl.exe	104
PID 3120 wrote to memory of 4752	3120	khglbrl.exe	104
PID 3120 wrote to memory of 4752	3120	khglbrl.exe	104
PID 3120 wrote to memory of 4752	3120	khglbrl.exe	104
PID 3120 wrote to memory of 4752	3120	khglbrl.exe	104

C:\Users\Admin\AppData\Local\Temp\Opdxdyeul.exe
"C:\Users\Admin\AppData\Local\Temp\Opdxdyeul.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3620
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwATwBwAGQAeABkAHkAZQB1AGwALgBlAHgAZQA7ACAAQQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUAByAG8AYwBlAHMAcwAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwATwBwAGQAeABkAHkAZQB1AGwALgBlAHgAZQA7AEEAZABkAC0ATQBwAFAAcgBlAGYAZQByAGUAbgBjAGUAIAAtAEUAeABjAGwAdQBzAGkAbwBuAFAAYQB0AGgAIABDADoAXABVAHMAZQByAHMAXABBAGQAbQBpAG4AXABBAHAAcABEAGEAdABhAFwAUgBvAGEAbQBpAG4AZwBcAFkAagBsAHcAdQB1AHkAcwAuAGUAeABlADsAIABBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAHIAbwBjAGUAcwBzACAAQwA6AFwAVQBzAGUAcgBzAFwAQQBkAG0AaQBuAFwAQQBwAHAARABhAHQAYQBcAFIAbwBhAG0AaQBuAGcAXABZAGoAbAB3AHUAdQB5AHMALgBlAHgAZQA=
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3404
- C:\Users\Admin\AppData\Local\Temp\Opdxdyeul.exe
  "C:\Users\Admin\AppData\Local\Temp\Opdxdyeul.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:740

C:\ProgramData\nnifx\khglbrl.exe
C:\ProgramData\nnifx\khglbrl.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1876
- C:\ProgramData\nnifx\khglbrl.exe
  "C:\ProgramData\nnifx\khglbrl.exe"
  2⤵
  - Executes dropped EXE
  PID:2812

C:\ProgramData\nnifx\khglbrl.exe
C:\ProgramData\nnifx\khglbrl.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3120
- C:\ProgramData\nnifx\khglbrl.exe
  "C:\ProgramData\nnifx\khglbrl.exe"
  2⤵
  - Executes dropped EXE
  PID:4752

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\nnifx\khglbrl.exe

Filesize
894KB

MD5
cee58644e824d57927fe73be837b1418

SHA1
698d1a11ab58852be004fd4668a6f25371621976

SHA256
4235c78ffaf12c4e584666da54cfc5dc56412235f5a2d313dcac07d1314dd52e

SHA512
ab9e9083ed107b5600f802ec66dab71f1064377749b6c874f8ce6e9ce5b2718a1dc45372b883943a8eae99378d1151ce15983d4c9be67d559cd72b28b9f55fb5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2hliozfy.ypu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/740-1143-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3120-3304-0x0000000005360000-0x00000000053B4000-memory.dmp

Filesize
336KB

Download
memory/3404-1123-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3404-1109-0x0000000070750000-0x000000007079C000-memory.dmp

Filesize
304KB

Download
memory/3404-1131-0x0000000007A80000-0x0000000007A9A000-memory.dmp

Filesize
104KB

Download
memory/3404-1130-0x0000000007980000-0x0000000007994000-memory.dmp

Filesize
80KB

Download
memory/3404-1129-0x0000000007970000-0x000000000797E000-memory.dmp

Filesize
56KB

Download
memory/3404-1128-0x0000000007940000-0x0000000007951000-memory.dmp

Filesize
68KB

Download
memory/3404-1127-0x00000000079C0000-0x0000000007A56000-memory.dmp

Filesize
600KB

Download
memory/3404-1126-0x00000000077B0000-0x00000000077BA000-memory.dmp

Filesize
40KB

Download
memory/3404-1125-0x0000000007740000-0x000000000775A000-memory.dmp

Filesize
104KB

Download
memory/3404-1124-0x0000000007D80000-0x00000000083FA000-memory.dmp

Filesize
6.5MB

Download
memory/3404-1089-0x0000000002E30000-0x0000000002E66000-memory.dmp

Filesize
216KB

Download
memory/3404-1122-0x0000000007410000-0x00000000074B3000-memory.dmp

Filesize
652KB

Download
memory/3404-1121-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3404-1132-0x0000000007A60000-0x0000000007A68000-memory.dmp

Filesize
32KB

Download
memory/3404-1110-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3404-1120-0x00000000069F0000-0x0000000006A0E000-memory.dmp

Filesize
120KB

Download
memory/3404-1108-0x00000000073D0000-0x0000000007402000-memory.dmp

Filesize
200KB

Download
memory/3404-1107-0x00000000064B0000-0x00000000064FC000-memory.dmp

Filesize
304KB

Download
memory/3404-1106-0x0000000006400000-0x000000000641E000-memory.dmp

Filesize
120KB

Download
memory/3404-1105-0x0000000005F20000-0x0000000006274000-memory.dmp

Filesize
3.3MB

Download
memory/3404-1135-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3404-1095-0x0000000005DB0000-0x0000000005E16000-memory.dmp

Filesize
408KB

Download
memory/3404-1094-0x0000000005D40000-0x0000000005DA6000-memory.dmp

Filesize
408KB

Download
memory/3404-1093-0x0000000005580000-0x00000000055A2000-memory.dmp

Filesize
136KB

Download
memory/3404-1091-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3404-1092-0x0000000005710000-0x0000000005D38000-memory.dmp

Filesize
6.2MB

Download
memory/3404-1090-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3620-39-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-32-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-36-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-6-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-22-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-20-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-5-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-1077-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3620-1079-0x0000000005250000-0x000000000529C000-memory.dmp

Filesize
304KB

Download
memory/3620-1078-0x00000000054E0000-0x0000000005538000-memory.dmp

Filesize
352KB

Download
memory/3620-1084-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3620-1085-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3620-1083-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3620-1086-0x00000000751AE000-0x00000000751AF000-memory.dmp

Filesize
4KB

Download
memory/3620-1087-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3620-1088-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3620-44-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-10-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-54-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-12-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-18-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-24-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-26-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-28-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-30-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-8-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-34-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-0-0x00000000751AE000-0x00000000751AF000-memory.dmp

Filesize
4KB

Download
memory/3620-40-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-42-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-46-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-48-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-50-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-52-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-56-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-58-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-60-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-62-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-64-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-66-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-68-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-14-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-16-0x0000000005390000-0x0000000005466000-memory.dmp

Filesize
856KB

Download
memory/3620-4-0x0000000005390000-0x000000000546C000-memory.dmp

Filesize
880KB

Download
memory/3620-1137-0x0000000005780000-0x00000000057D4000-memory.dmp

Filesize
336KB

Download
memory/3620-1136-0x00000000069C0000-0x0000000006F64000-memory.dmp

Filesize
5.6MB

Download
memory/3620-3-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3620-1145-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3620-2-0x00000000052B0000-0x000000000538A000-memory.dmp

Filesize
872KB

Download
memory/3620-1-0x0000000000770000-0x0000000000856000-memory.dmp

Filesize
920KB

Download