systembc | 67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4

Analysis

max time kernel
142s
max time network
143s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
03-06-2024 22:43

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General

Target

92dbe3d237c0b38a6feaece08bf7a1f6_JaffaCakes118.exe
Size

90KB
MD5

92dbe3d237c0b38a6feaece08bf7a1f6
SHA1

5eeda1c31858de743f8afa7ce6c24c8c0e816c7d
SHA256

67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4
SHA512

fe5f35f485dc2a675374c2581ea8a0bb92f88ef43d225e0f53d57bed6587fd73a8554cd946af252f1557e3e8573c00c43929c31e9e32258aae2b49e538c6494d
SSDEEP

1536:YyXUR8CPCrDfDpmk5C7hWmMv1CoAuBFYDlXq6RTm:5XUta7ptgC1CCE66R

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

sdadvert197.com:4044

mexstat128.com:4044

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 1 IoCs

Processes:

uintbf.exe

pid process

2876 uintbf.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.

Processes:

flow ioc

8 ip4.seeip.org
9 ip4.seeip.org
6 api.ipify.org
7 api.ipify.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Proxy
T1090

pid	process
2876	uintbf.exe

flow	ioc
8	ip4.seeip.org
9	ip4.seeip.org
6	api.ipify.org
7	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

92dbe3d237c0b38a6feaece08bf7a1f6_JaffaCakes118.exe

description	ioc	process
File created	C:\Windows\Tasks\uintbf.job	92dbe3d237c0b38a6feaece08bf7a1f6_JaffaCakes118.exe
File opened for modification	C:\Windows\Tasks\uintbf.job	92dbe3d237c0b38a6feaece08bf7a1f6_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

92dbe3d237c0b38a6feaece08bf7a1f6_JaffaCakes118.exe

pid process

2064 92dbe3d237c0b38a6feaece08bf7a1f6_JaffaCakes118.exe

pid	process
2064	92dbe3d237c0b38a6feaece08bf7a1f6_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 3048 wrote to memory of 2876	3048	taskeng.exe	uintbf.exe
PID 3048 wrote to memory of 2876	3048	taskeng.exe	uintbf.exe
PID 3048 wrote to memory of 2876	3048	taskeng.exe	uintbf.exe
PID 3048 wrote to memory of 2876	3048	taskeng.exe	uintbf.exe

C:\Users\Admin\AppData\Local\Temp\92dbe3d237c0b38a6feaece08bf7a1f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\92dbe3d237c0b38a6feaece08bf7a1f6_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2064

C:\Windows\system32\taskeng.exe
taskeng.exe {CF44ACB2-31C8-45FE-9958-6D3FF5B008B2} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:3048
- C:\ProgramData\dgjl\uintbf.exe
  C:\ProgramData\dgjl\uintbf.exe start
  2⤵
  - Executes dropped EXE
  PID:2876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Proxy

T1090

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\dgjl\uintbf.exe

Filesize
90KB

MD5
92dbe3d237c0b38a6feaece08bf7a1f6

SHA1
5eeda1c31858de743f8afa7ce6c24c8c0e816c7d

SHA256
67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4

SHA512
fe5f35f485dc2a675374c2581ea8a0bb92f88ef43d225e0f53d57bed6587fd73a8554cd946af252f1557e3e8573c00c43929c31e9e32258aae2b49e538c6494d

Download Submit
memory/2064-2-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/2064-1-0x0000000001060000-0x0000000001160000-memory.dmp

Filesize
1024KB

Download
memory/2064-3-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2064-10-0x0000000000400000-0x0000000000F74000-memory.dmp

Filesize
11.5MB

Download
memory/2064-13-0x0000000001060000-0x0000000001160000-memory.dmp

Filesize
1024KB

Download
memory/2064-14-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/2876-11-0x0000000000400000-0x0000000000F74000-memory.dmp

Filesize
11.5MB

Download