systembc | a0a5ebd512b7685798ac966c0b05415df9eff585a79af11c9ff99d7aa17e2101

max time kernel
299s
max time network
305s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 11:39

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General

Target

2579be109c1035cb96942951710020a8.exe
Size

147KB
MD5

2579be109c1035cb96942951710020a8
SHA1

6987472967c8ce5e3d5fd6730a9da2964afacd10
SHA256

a0a5ebd512b7685798ac966c0b05415df9eff585a79af11c9ff99d7aa17e2101
SHA512

191ea3d7edc69f1cb9d1ec4967074667c5e1c6b02fdaa8bbc5a4414bf5ca00ccafadc49670c5b3065133915d78e482572545f1d0c8c3382e6a767c1f08a33a21
SSDEEP

3072:9NuSXw/c4JHdNX8PAzCABaxg0r27f8EjQspDNJJAksa:9oSXw/hfNXmAzbYg02Ok

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

advertspace10.club:4044

logstat17.club:4044

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
4336	txmj.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral4/memory/492-0-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/memory/492-2-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/memory/492-5-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/memory/492-7-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/files/0x000c00000002353c-14.dat	upx
behavioral4/memory/4336-18-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/memory/4336-22-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/memory/4336-29-0x0000000000400000-0x000000000044D000-memory.dmp	upx

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
56	api.ipify.org
55	api.ipify.org

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

Proxy
T1090

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Tasks\txmj.job	2579be109c1035cb96942951710020a8.exe
File created	C:\Windows\Tasks\txmj.job	2579be109c1035cb96942951710020a8.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
492	2579be109c1035cb96942951710020a8.exe
492	2579be109c1035cb96942951710020a8.exe

C:\Users\Admin\AppData\Local\Temp\2579be109c1035cb96942951710020a8.exe
"C:\Users\Admin\AppData\Local\Temp\2579be109c1035cb96942951710020a8.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:492

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 --field-trial-handle=4256,i,17128687272012926844,9802527383925822781,262144 --variations-seed-version --mojo-platform-channel-handle=3860 /prefetch:8
1⤵
PID:2108

C:\ProgramData\qmho\txmj.exe
C:\ProgramData\qmho\txmj.exe start2
1⤵
- Executes dropped EXE
PID:4336

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\qmho\txmj.exe

Filesize
147KB

MD5
2579be109c1035cb96942951710020a8

SHA1
6987472967c8ce5e3d5fd6730a9da2964afacd10

SHA256
a0a5ebd512b7685798ac966c0b05415df9eff585a79af11c9ff99d7aa17e2101

SHA512
191ea3d7edc69f1cb9d1ec4967074667c5e1c6b02fdaa8bbc5a4414bf5ca00ccafadc49670c5b3065133915d78e482572545f1d0c8c3382e6a767c1f08a33a21

Download Submit
memory/492-9-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/492-1-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/492-5-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/492-8-0x00000000022D0000-0x0000000002304000-memory.dmp

Filesize
208KB

Download
memory/492-7-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/492-0-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/492-10-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/492-2-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4336-16-0x00000000006E0000-0x00000000006E1000-memory.dmp

Filesize
4KB

Download
memory/4336-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4336-22-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4336-29-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4336-30-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4336-31-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download