systembc | bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25

General

Target

bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25.exe
Size

243KB
MD5

15f32b4f39a69e327b285b6cd2dd2cb9
SHA1

49ca0b152b2001febfe89d4ff2bea2f989a9a819
SHA256

bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25
SHA512

301893a9827946bd478255cc9cbc054c21a422e76bad3f0ded321d264ff14947e1736dd66cedc236a9d82afcd0c2f0c40f5a91d57266ee49acdc6acd14767f84

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

C2

dec15coma.com:4039

dec15coma.xyz:4039

Signatures

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

Processes:

omqoju.exe

pid process

752 omqoju.exe

pid	process
752	omqoju.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
C:\ProgramData\juxh\omqoju.exe	upx
C:\ProgramData\juxh\omqoju.exe	upx

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

Connection Proxy
T1090

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

Drops file in Windows directory 2 IoCs

Processes:

bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25.exe

description	ioc	process
File opened for modification	C:\Windows\Tasks\omqoju.job	bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25.exe
File created	C:\Windows\Tasks\omqoju.job	bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25.exe

pid process

1708 bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25.exe

pid	process
1708	bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 928 wrote to memory of 752	928	taskeng.exe	omqoju.exe
PID 928 wrote to memory of 752	928	taskeng.exe	omqoju.exe
PID 928 wrote to memory of 752	928	taskeng.exe	omqoju.exe
PID 928 wrote to memory of 752	928	taskeng.exe	omqoju.exe

C:\Users\Admin\AppData\Local\Temp\bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25.exe
"C:\Users\Admin\AppData\Local\Temp\bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1708

C:\Windows\system32\taskeng.exe
taskeng.exe {30163490-B927-45AD-8CA4-884FF5A1AC5B} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:928

C:\ProgramData\juxh\omqoju.exe
C:\ProgramData\juxh\omqoju.exe start
2⤵
- Executes dropped EXE
PID:752

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Connection Proxy

1

T1090

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Connection Proxy

1

T1090

Exfiltration

Impact

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Downloads

C:\ProgramData\juxh\omqoju.exe
MD5
15f32b4f39a69e327b285b6cd2dd2cb9

SHA1
49ca0b152b2001febfe89d4ff2bea2f989a9a819

SHA256
bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25

SHA512
301893a9827946bd478255cc9cbc054c21a422e76bad3f0ded321d264ff14947e1736dd66cedc236a9d82afcd0c2f0c40f5a91d57266ee49acdc6acd14767f84

Download Submit
C:\ProgramData\juxh\omqoju.exe
MD5
15f32b4f39a69e327b285b6cd2dd2cb9

SHA1
49ca0b152b2001febfe89d4ff2bea2f989a9a819

SHA256
bac4b948f4a8cb9c61c6167c7aa814affe670e527190aacf4f31eace55236d25

SHA512
301893a9827946bd478255cc9cbc054c21a422e76bad3f0ded321d264ff14947e1736dd66cedc236a9d82afcd0c2f0c40f5a91d57266ee49acdc6acd14767f84

Download Submit
memory/752-61-0x00000000055E8000-0x00000000055EF000-memory.dmp

Filesize
28KB

Download
memory/752-64-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/752-63-0x00000000055E8000-0x00000000055EF000-memory.dmp

Filesize
28KB

Download
memory/752-65-0x0000000000400000-0x000000000516B000-memory.dmp

Filesize
77.4MB

Download
memory/1708-54-0x0000000005249000-0x000000000524F000-memory.dmp

Filesize
24KB

Download
memory/1708-55-0x0000000005249000-0x000000000524F000-memory.dmp

Filesize
24KB

Download
memory/1708-56-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/1708-57-0x0000000075CA1000-0x0000000075CA3000-memory.dmp

Filesize
8KB

Download
memory/1708-58-0x0000000000400000-0x000000000516B000-memory.dmp

Filesize
77.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads