orcus | bdca302a43dfd30f874ce13b2a20f4211e7bd88eba40a0c41f30873389133d3d

General

Target

BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe
Size

789KB
MD5

75e95a530e5fe926bcca7c2c1a008e18
SHA1

ff759b9abdd18c05b51509f92146a801f3fae939
SHA256

bdca302a43dfd30f874ce13b2a20f4211e7bd88eba40a0c41f30873389133d3d
SHA512

ad2cc5878b248cda26e5464dea496ea67ddd9bdf120c56dceee2581a167ae0771d19b68c19b62f4c487d045b0680c7d3892ba8aa99023e93b6391ea8d49821da

Score

10^/10

orcus $evasion rat spyware stealer trojan

Malware Config

Extracted

Family

orcus

Botnet

$

C2

lsdw.dyndns.org:10134

Mutex

bad69595827c48b5b9b2ea99aaff68b6

Attributes

autostart_method
Disable
enable_keylogger
true
install_path
%programfiles%\Orcus\Orcus.exe
reconnect_delay
10000
registry_keyname
Orcus
taskscheduler_taskname
Orcus
watchdog_path
AppData\OrcusWatchdog.exe

Signatures

Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
rat spyware stealer orcus
UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Orcurs Rat Executable 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1976-79-0x0000000004E80000-0x0000000004F62000-memory.dmp	orcus

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

mydoc.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mydoc.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mydoc.exe

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

676 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exemydoc.exe

pid process

2004 BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe
2004 BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe
1976 mydoc.exe
1976 mydoc.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe

pid process

2004 BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exemydoc.exe

description pid process

Token: SeDebugPrivilege 2004 BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe
Token: SeDebugPrivilege 1976 mydoc.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

mydoc.exe

pid process

1976 mydoc.exe

pid	process
676	schtasks.exe

pid	process
2004	BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe
2004	BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe
1976	mydoc.exe
1976	mydoc.exe

pid	process
2004	BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe

description	pid	process
Token: SeDebugPrivilege	2004	BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe
Token: SeDebugPrivilege	1976	mydoc.exe

pid	process
1976	mydoc.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.execmd.exemydoc.execmd.execmd.exe

description	pid	process	target process
PID 2004 wrote to memory of 1988	2004	BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe	cmd.exe
PID 2004 wrote to memory of 1988	2004	BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe	cmd.exe
PID 2004 wrote to memory of 1988	2004	BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe	cmd.exe
PID 2004 wrote to memory of 1988	2004	BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe	cmd.exe
PID 1988 wrote to memory of 1976	1988	cmd.exe	mydoc.exe
PID 1988 wrote to memory of 1976	1988	cmd.exe	mydoc.exe
PID 1988 wrote to memory of 1976	1988	cmd.exe	mydoc.exe
PID 1988 wrote to memory of 1976	1988	cmd.exe	mydoc.exe
PID 1976 wrote to memory of 1092	1976	mydoc.exe	cmd.exe
PID 1976 wrote to memory of 1092	1976	mydoc.exe	cmd.exe
PID 1976 wrote to memory of 1092	1976	mydoc.exe	cmd.exe
PID 1976 wrote to memory of 1092	1976	mydoc.exe	cmd.exe
PID 1092 wrote to memory of 1932	1092	cmd.exe	schtasks.exe
PID 1092 wrote to memory of 1932	1092	cmd.exe	schtasks.exe
PID 1092 wrote to memory of 1932	1092	cmd.exe	schtasks.exe
PID 1092 wrote to memory of 1932	1092	cmd.exe	schtasks.exe
PID 1976 wrote to memory of 396	1976	mydoc.exe	cmd.exe
PID 1976 wrote to memory of 396	1976	mydoc.exe	cmd.exe
PID 1976 wrote to memory of 396	1976	mydoc.exe	cmd.exe
PID 1976 wrote to memory of 396	1976	mydoc.exe	cmd.exe
PID 396 wrote to memory of 676	396	cmd.exe	schtasks.exe
PID 396 wrote to memory of 676	396	cmd.exe	schtasks.exe
PID 396 wrote to memory of 676	396	cmd.exe	schtasks.exe
PID 396 wrote to memory of 676	396	cmd.exe	schtasks.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

mydoc.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mydoc.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mydoc.exe

C:\Users\Admin\AppData\Local\Temp\BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe
"C:\Users\Admin\AppData\Local\Temp\BDCA302A43DFD30F874CE13B2A20F4211E7BD88EBA40A.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2004

C:\Windows\SysWOW64\cmd.exe
"cmd"
2⤵
- Suspicious use of WriteProcessMemory
PID:1988

C:\Users\Admin\Videos\show\mydoc.exe
"C:\Users\Admin\Videos\show\mydoc.exe"
3⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1976

C:\Windows\SysWOW64\cmd.exe
"cmd"
4⤵
- Suspicious use of WriteProcessMemory
PID:1092

C:\Windows\SysWOW64\schtasks.exe
schtasks.exe /Delete /TN "Update\doc" /F
5⤵
PID:1932

C:\Windows\SysWOW64\cmd.exe
"cmd"
4⤵
- Suspicious use of WriteProcessMemory
PID:396

C:\Windows\SysWOW64\schtasks.exe
schtasks.exe /Create /TN "Update\doc" /XML "C:\Users\Admin\AppData\Local\Temp\1495591141.xml"
5⤵
- Creates scheduled task(s)
PID:676

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Bypass User Account Control

1

T1088

Scheduled Task

1

T1053

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

1

T1089

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\1495591141.xml
MD5
a2f97ef554c429c58245ff42fa5e4ef6

SHA1
9df8ae57be64a8780b234d42c3a694590cde4ea8

SHA256
7fa6d2e40b2ddfd08e5c8db640fe27e5cbbbb057a8810ea3c6bfd2ee681de91b

SHA512
d3a81274099f39fc6b01b3422d992731de42eec57a5c2b08285516cf4c7a543675db12595af3d0c1d5d3bdf47ce1d482452f3fb41c35a80b24c8a3ebd3ca3ee5

Download Submit
memory/396-75-0x0000000000000000-mapping.dmp

Download
memory/676-76-0x0000000000000000-mapping.dmp

Download
memory/1092-73-0x0000000000000000-mapping.dmp

Download
memory/1932-74-0x0000000000000000-mapping.dmp

Download
memory/1976-78-0x0000000004CE0000-0x0000000004CE1000-memory.dmp

Filesize
4KB

Download
memory/1976-80-0x0000000000370000-0x000000000037C000-memory.dmp

Filesize
48KB

Download
memory/1976-67-0x0000000000000000-mapping.dmp

Download
memory/1976-84-0x0000000000550000-0x000000000055C000-memory.dmp

Filesize
48KB

Download
memory/1976-83-0x00000000004D0000-0x00000000004E5000-memory.dmp

Filesize
84KB

Download
memory/1976-82-0x0000000000460000-0x0000000000470000-memory.dmp

Filesize
64KB

Download
memory/1976-81-0x0000000002140000-0x000000000219A000-memory.dmp

Filesize
360KB

Download
memory/1976-79-0x0000000004E80000-0x0000000004F62000-memory.dmp

Filesize
904KB

Download
memory/1988-65-0x0000000000000000-mapping.dmp

Download
memory/2004-64-0x0000000000300000-0x0000000000304000-memory.dmp

Filesize
16KB

Download
memory/2004-60-0x0000000000970000-0x0000000000971000-memory.dmp

Filesize
4KB

Download
memory/2004-62-0x0000000004B90000-0x0000000004C3C000-memory.dmp

Filesize
688KB

Download
memory/2004-63-0x0000000007160000-0x0000000007211000-memory.dmp

Filesize
708KB

Download
memory/2004-66-0x0000000004C60000-0x0000000004C61000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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