remcos | 4969dc5e2b7349e189cdc079c2e9e02014e559d1315564b6d6fd18eeb252c605

Analysis

max time kernel
112s
max time network
111s
platform
windows10_x64
resource
win10v20210408
submitted
03-05-2021 06:02

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General

Target

RFQ-00205-0305.exe
Size

753KB
MD5

621cb2fb281f8fc1a1e0bfdbd317570e
SHA1

378b0726c6d90a9ba4c3f58ca4bef518e6ef6410
SHA256

4969dc5e2b7349e189cdc079c2e9e02014e559d1315564b6d6fd18eeb252c605
SHA512

bc257309d57129ae19402e25be0b69243f7fdc9686d0d690d9ce4357f311d0487bfa05569f79e530ba3b936dee55e7137b3ccb73cd660830c823da482c8ce5ba

Score

10^/10

remcos xmrig miner persistence rat

Malware Config

Extracted

Family

remcos

style.ptbagasps.co.id:42024

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
miner xmrig
Executes dropped EXE 1 IoCs

Processes:

Netplwiz.exe

pid process

3836 Netplwiz.exe
Loads dropped DLL 1 IoCs

Processes:

Netplwiz.exe

pid process

3836 Netplwiz.exe

pid	process
3836	Netplwiz.exe

pid	process
3836	Netplwiz.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RFQ-00205-0305.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Txxvuz = "C:\\Users\\Public\\Libraries\\zuvxxT.url"	RFQ-00205-0305.exe

Drops file in System32 directory 1 IoCs

Processes:

logagent.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\logagent.exe logagent.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

RFQ-00205-0305.exe

description pid process target process

PID 572 set thread context of 1252 572 RFQ-00205-0305.exe logagent.exe
Modifies registry class 1 IoCs

Processes:

logagent.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings logagent.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exe

pid process

2996 powershell.exe
2996 powershell.exe
2996 powershell.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

logagent.exe

pid process

1252 logagent.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\logagent.exe	logagent.exe

description	pid	process	target process
PID 572 set thread context of 1252	572	RFQ-00205-0305.exe	logagent.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	logagent.exe

pid	process
2996	powershell.exe
2996	powershell.exe
2996	powershell.exe

pid	process
1252	logagent.exe

Suspicious use of AdjustPrivilegeToken 22 IoCs

Processes:

powershell.exe

description	pid	process
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeIncreaseQuotaPrivilege	2996	powershell.exe
Token: SeSecurityPrivilege	2996	powershell.exe
Token: SeTakeOwnershipPrivilege	2996	powershell.exe
Token: SeLoadDriverPrivilege	2996	powershell.exe
Token: SeSystemProfilePrivilege	2996	powershell.exe
Token: SeSystemtimePrivilege	2996	powershell.exe
Token: SeProfSingleProcessPrivilege	2996	powershell.exe
Token: SeIncBasePriorityPrivilege	2996	powershell.exe
Token: SeCreatePagefilePrivilege	2996	powershell.exe
Token: SeBackupPrivilege	2996	powershell.exe
Token: SeRestorePrivilege	2996	powershell.exe
Token: SeShutdownPrivilege	2996	powershell.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeSystemEnvironmentPrivilege	2996	powershell.exe
Token: SeRemoteShutdownPrivilege	2996	powershell.exe
Token: SeUndockPrivilege	2996	powershell.exe
Token: SeManageVolumePrivilege	2996	powershell.exe
Token: 33	2996	powershell.exe
Token: 34	2996	powershell.exe
Token: 35	2996	powershell.exe
Token: 36	2996	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

logagent.exe

pid process

1252 logagent.exe

pid	process
1252	logagent.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

RFQ-00205-0305.execmd.execmd.exeNetplwiz.execmd.exelogagent.exe

description	pid	process	target process
PID 572 wrote to memory of 1252	572	RFQ-00205-0305.exe	logagent.exe
PID 572 wrote to memory of 1252	572	RFQ-00205-0305.exe	logagent.exe
PID 572 wrote to memory of 1252	572	RFQ-00205-0305.exe	logagent.exe
PID 572 wrote to memory of 1252	572	RFQ-00205-0305.exe	logagent.exe
PID 572 wrote to memory of 1252	572	RFQ-00205-0305.exe	logagent.exe
PID 572 wrote to memory of 3944	572	RFQ-00205-0305.exe	cmd.exe
PID 572 wrote to memory of 3944	572	RFQ-00205-0305.exe	cmd.exe
PID 572 wrote to memory of 3944	572	RFQ-00205-0305.exe	cmd.exe
PID 3944 wrote to memory of 2120	3944	cmd.exe	cmd.exe
PID 3944 wrote to memory of 2120	3944	cmd.exe	cmd.exe
PID 3944 wrote to memory of 2120	3944	cmd.exe	cmd.exe
PID 2120 wrote to memory of 3836	2120	cmd.exe	Netplwiz.exe
PID 2120 wrote to memory of 3836	2120	cmd.exe	Netplwiz.exe
PID 3836 wrote to memory of 1800	3836	Netplwiz.exe	cmd.exe
PID 3836 wrote to memory of 1800	3836	Netplwiz.exe	cmd.exe
PID 1800 wrote to memory of 2996	1800	cmd.exe	powershell.exe
PID 1800 wrote to memory of 2996	1800	cmd.exe	powershell.exe
PID 1252 wrote to memory of 4004	1252	logagent.exe	WScript.exe
PID 1252 wrote to memory of 4004	1252	logagent.exe	WScript.exe
PID 1252 wrote to memory of 4004	1252	logagent.exe	WScript.exe

C:\Users\Admin\AppData\Local\Temp\RFQ-00205-0305.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ-00205-0305.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:572

C:\Windows\SysWOW64\logagent.exe
C:\Windows\System32\logagent.exe
2⤵
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1252

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\eitoztoruwdkhmafqhzyc.vbs"
3⤵
PID:4004

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Public\stt.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:3944

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /K C:\Users\Public\PXOR.bat
3⤵
- Suspicious use of WriteProcessMemory
PID:2120

C:\Windows \System32\Netplwiz.exe
"C:\Windows \System32\Netplwiz.exe"
4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3836

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Public\Cdex.bat
5⤵
- Suspicious use of WriteProcessMemory
PID:1800

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -WindowStyle Hidden -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
6⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2996

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\eitoztoruwdkhmafqhzyc.vbs
MD5
c76729cb5f778b8a91d8a5ee0cd36e2c

SHA1
06a78fd67eb3214ebd4fe38de132f698fc99e1fa

SHA256
9429af02e3eb5b0000d41eda951b2a6672a0c724e580cda1d1e68a6b7bcf2dfd

SHA512
b9f098a3539454fb250d4827ad6397b765d153bf1f1385eee2feceb0901607fb5046bdb2655af2e5bc37a9e4a63a00cd173ba9304233a272c0850511061178c6

Download Submit
C:\Users\Public\Cdex.bat
MD5
84de6cf0b720db43f85d95204a2c1902

SHA1
c87c4c1f3ad9f28968c46a89c4fff8bdb867b006

SHA256
bc4baad4a7983c54c1764b0aa57f12d536ce506253c82e06dd98e17bbb5f77ee

SHA512
5fd018b5f72797a64934f8f35d4510ef95c235442a807d476e7fd3c14eaa854c1a3092332edbdd1028f8954ab28acb5aab8720a74226cfcfab3cb3a7772a64b7

Download Submit
C:\Users\Public\NETUTILS.dll
MD5
39507d772c63ca496a25a14a8b5d14b2

SHA1
5b603f5c11eb9ab4313694315b4d4894ff4641d4

SHA256
36d1fa474cd8271f9b74b9481025614b6ff309f767f69d9f1ff3960c7205ad12

SHA512
0c740fd7b6d67d9938b0d8e1ea7d6c41910dd6d0b85b4ec8b6015ff8c0c73798dee01f01da0b5b0c07038663aca7945faca0e2b5afc1cb751aaba7567d332f5f

Download Submit
C:\Users\Public\Netplwiz.exe
MD5
f94b7fb6dac49844d03c7087b2d8b472

SHA1
0e84139fced0ee8ef929d0bd5f01559a7dcf1db0

SHA256
46e31f337ed0d9a6fe3f159abc91c9b9b6a6062982bbcd84a51784d7128e7ae4

SHA512
d63878f94f7699e4cc63c2cd885c29455e0c423d32dba750e4fc3aa74dbaca80a1a4b176719213b9fc6584de6a40cddff7864c7fb4cfba13dfcb437a36e41b80

Download Submit
C:\Users\Public\PXOR.bat
MD5
0d8aef656413642f55e0902cc5df5e6f

SHA1
73ec56d08bd9b3c45d55c97bd1c1286b77c8ff49

SHA256
670f94b92f45bc2f3f44a80c7f3021f874aa16fde38ed7d7f3ebed13ae09fa11

SHA512
efe690b1bcf06e16be469622b45c98b5dc1f1e06410cbf7e7dccb2975524c4d6bc7e23de9a129d50d73cd924f02e23f925555894f2c7da1064dcc57151f50876

Download Submit
C:\Users\Public\stt.bat
MD5
8a850253c31df9a7e1c00c80df2630d5

SHA1
e3da74081b027a3b591488b28da22742bcfe8495

SHA256
8fdeba3ec903bde700342083d16f72452366aa0b1b30d0e58dee0af74cebfa35

SHA512
30510bdc34680a0865a0811d9be29dec91c74717feccd58c9b4d88e77be9e5d13a539806a1b2901aff595b2fe2cc45926b69ed42e899d2dd2913c78a732e84d1

Download Submit
C:\Windows \System32\Netplwiz.exe
MD5
f94b7fb6dac49844d03c7087b2d8b472

SHA1
0e84139fced0ee8ef929d0bd5f01559a7dcf1db0

SHA256
46e31f337ed0d9a6fe3f159abc91c9b9b6a6062982bbcd84a51784d7128e7ae4

SHA512
d63878f94f7699e4cc63c2cd885c29455e0c423d32dba750e4fc3aa74dbaca80a1a4b176719213b9fc6584de6a40cddff7864c7fb4cfba13dfcb437a36e41b80

Download Submit
C:\Windows \System32\netutils.dll
MD5
39507d772c63ca496a25a14a8b5d14b2

SHA1
5b603f5c11eb9ab4313694315b4d4894ff4641d4

SHA256
36d1fa474cd8271f9b74b9481025614b6ff309f767f69d9f1ff3960c7205ad12

SHA512
0c740fd7b6d67d9938b0d8e1ea7d6c41910dd6d0b85b4ec8b6015ff8c0c73798dee01f01da0b5b0c07038663aca7945faca0e2b5afc1cb751aaba7567d332f5f

Download Submit
\Windows \System32\NETUTILS.dll
MD5
39507d772c63ca496a25a14a8b5d14b2

SHA1
5b603f5c11eb9ab4313694315b4d4894ff4641d4

SHA256
36d1fa474cd8271f9b74b9481025614b6ff309f767f69d9f1ff3960c7205ad12

SHA512
0c740fd7b6d67d9938b0d8e1ea7d6c41910dd6d0b85b4ec8b6015ff8c0c73798dee01f01da0b5b0c07038663aca7945faca0e2b5afc1cb751aaba7567d332f5f

Download Submit
memory/572-114-0x0000000000540000-0x00000000005EE000-memory.dmp

Filesize
696KB

Download
memory/1252-116-0x000000000042EEEF-mapping.dmp

Download
memory/1252-115-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1252-132-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1800-129-0x0000000000000000-mapping.dmp

Download
memory/2120-121-0x0000000000000000-mapping.dmp

Download
memory/2996-131-0x0000000000000000-mapping.dmp

Download
memory/2996-137-0x0000021311D20000-0x0000021311D21000-memory.dmp

Filesize
4KB

Download
memory/2996-140-0x000002132A430000-0x000002132A431000-memory.dmp

Filesize
4KB

Download
memory/2996-144-0x000002132A1A0000-0x000002132A1A2000-memory.dmp

Filesize
8KB

Download
memory/2996-145-0x000002132A1A3000-0x000002132A1A5000-memory.dmp

Filesize
8KB

Download
memory/2996-146-0x000002132A1A6000-0x000002132A1A8000-memory.dmp

Filesize
8KB

Download
memory/3836-125-0x0000000000000000-mapping.dmp

Download
memory/3944-119-0x0000000000000000-mapping.dmp

Download
memory/4004-170-0x0000000000000000-mapping.dmp

Download