remcos | 52b98cca3167f7f97a7ae7729aeddee0b2280a18841d692697bd6dea415f3abe

General

Target

SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
Size

1.7MB
MD5

99e166082b19603ff6c4cbebd2641813
SHA1

407f1729ca0abe94a3202789522807683dfe57aa
SHA256

52b98cca3167f7f97a7ae7729aeddee0b2280a18841d692697bd6dea415f3abe
SHA512

77a55185038a2070b0b6b72248ec199afa3fc0f2c4b5f649fe46db3647683d6ced86b3071c88719c07a77cb269fb1ffdc72fc7ac37cdcaa472c249a3fb5d7b0f

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

hjduiebcvzcalpmjdbcnwqadhsiybcnzxswedgap.ydns.eu:2024

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Executes dropped EXE 2 IoCs

Processes:

win.exewin.exe

pid process

1316 win.exe
1004 win.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1256 cmd.exe

pid	process
1316	win.exe
1004	win.exe

pid	process
1256	cmd.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exewin.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win.exe\""	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\	win.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win.exe\""	win.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 21 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exewin.exe

pid	process
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1316	win.exe
1316	win.exe
1316	win.exe
1316	win.exe
1316	win.exe
1316	win.exe
1316	win.exe
1316	win.exe
1316	win.exe
1316	win.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exewin.exe

description	pid	process	target process
PID 1360 set thread context of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1316 set thread context of 1004	1316	win.exe	win.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1624 1360 WerFault.exe SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
Delays execution with timeout.exe 2 IoCs
evasion

Processes:

timeout.exetimeout.exe

pid process

1784 timeout.exe
856 timeout.exe

pid	pid_target	process	target process
1624	1360	WerFault.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe

pid	process
1784	timeout.exe
856	timeout.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exeWerFault.exewin.exe

pid	process
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
1624	WerFault.exe
1624	WerFault.exe
1624	WerFault.exe
1624	WerFault.exe
1624	WerFault.exe
1316	win.exe
1316	win.exe
1316	win.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1624 WerFault.exe

pid	process
1624	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exeWerFault.exewin.exe

description	pid	process
Token: SeDebugPrivilege	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
Token: SeDebugPrivilege	1624	WerFault.exe
Token: SeDebugPrivilege	1316	win.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

win.exe

pid process

1004 win.exe

pid	process
1004	win.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.execmd.exeSecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exeWScript.execmd.exewin.execmd.exe

description	pid	process	target process
PID 1360 wrote to memory of 1876	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	cmd.exe
PID 1360 wrote to memory of 1876	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	cmd.exe
PID 1360 wrote to memory of 1876	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	cmd.exe
PID 1360 wrote to memory of 1876	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	cmd.exe
PID 1876 wrote to memory of 1784	1876	cmd.exe	timeout.exe
PID 1876 wrote to memory of 1784	1876	cmd.exe	timeout.exe
PID 1876 wrote to memory of 1784	1876	cmd.exe	timeout.exe
PID 1876 wrote to memory of 1784	1876	cmd.exe	timeout.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1280	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
PID 1360 wrote to memory of 1624	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	WerFault.exe
PID 1360 wrote to memory of 1624	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	WerFault.exe
PID 1360 wrote to memory of 1624	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	WerFault.exe
PID 1360 wrote to memory of 1624	1360	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	WerFault.exe
PID 1280 wrote to memory of 316	1280	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	WScript.exe
PID 1280 wrote to memory of 316	1280	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	WScript.exe
PID 1280 wrote to memory of 316	1280	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	WScript.exe
PID 1280 wrote to memory of 316	1280	SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe	WScript.exe
PID 316 wrote to memory of 1256	316	WScript.exe	cmd.exe
PID 316 wrote to memory of 1256	316	WScript.exe	cmd.exe
PID 316 wrote to memory of 1256	316	WScript.exe	cmd.exe
PID 316 wrote to memory of 1256	316	WScript.exe	cmd.exe
PID 1256 wrote to memory of 1316	1256	cmd.exe	win.exe
PID 1256 wrote to memory of 1316	1256	cmd.exe	win.exe
PID 1256 wrote to memory of 1316	1256	cmd.exe	win.exe
PID 1256 wrote to memory of 1316	1256	cmd.exe	win.exe
PID 1316 wrote to memory of 1672	1316	win.exe	cmd.exe
PID 1316 wrote to memory of 1672	1316	win.exe	cmd.exe
PID 1316 wrote to memory of 1672	1316	win.exe	cmd.exe
PID 1316 wrote to memory of 1672	1316	win.exe	cmd.exe
PID 1672 wrote to memory of 856	1672	cmd.exe	timeout.exe
PID 1672 wrote to memory of 856	1672	cmd.exe	timeout.exe
PID 1672 wrote to memory of 856	1672	cmd.exe	timeout.exe
PID 1672 wrote to memory of 856	1672	cmd.exe	timeout.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe
PID 1316 wrote to memory of 1004	1316	win.exe	win.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1360

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:1876

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:1784

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.PackedNET.703.21955.2754.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1280

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:316

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win.exe"
4⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1256

C:\Users\Admin\AppData\Roaming\win.exe
C:\Users\Admin\AppData\Roaming\win.exe
5⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1316

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:1672

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:856

C:\Users\Admin\AppData\Roaming\win.exe
"C:\Users\Admin\AppData\Roaming\win.exe"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:1004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 928
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1624

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs
MD5
4a74e626596d6e66b4bbc59ee6848f2d

SHA1
047849ac8735ecc0943428c7cd5e00b52eee06ed

SHA256
98bd6dc219a7a3e04d3d67bbec9f0b4d4640831a3a6be0a0078b050041088b0e

SHA512
1cd943482d0f1ce2ffaf6ee4a82895e4d57c52051bb14bbda0548cf072b4c5cbe719d2cdb549b5ae7c0241dd9c68dd9d1674acd26aed684b8145500079cc5403

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
99e166082b19603ff6c4cbebd2641813

SHA1
407f1729ca0abe94a3202789522807683dfe57aa

SHA256
52b98cca3167f7f97a7ae7729aeddee0b2280a18841d692697bd6dea415f3abe

SHA512
77a55185038a2070b0b6b72248ec199afa3fc0f2c4b5f649fe46db3647683d6ced86b3071c88719c07a77cb269fb1ffdc72fc7ac37cdcaa472c249a3fb5d7b0f

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
99e166082b19603ff6c4cbebd2641813

SHA1
407f1729ca0abe94a3202789522807683dfe57aa

SHA256
52b98cca3167f7f97a7ae7729aeddee0b2280a18841d692697bd6dea415f3abe

SHA512
77a55185038a2070b0b6b72248ec199afa3fc0f2c4b5f649fe46db3647683d6ced86b3071c88719c07a77cb269fb1ffdc72fc7ac37cdcaa472c249a3fb5d7b0f

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
99e166082b19603ff6c4cbebd2641813

SHA1
407f1729ca0abe94a3202789522807683dfe57aa

SHA256
52b98cca3167f7f97a7ae7729aeddee0b2280a18841d692697bd6dea415f3abe

SHA512
77a55185038a2070b0b6b72248ec199afa3fc0f2c4b5f649fe46db3647683d6ced86b3071c88719c07a77cb269fb1ffdc72fc7ac37cdcaa472c249a3fb5d7b0f

Download Submit
\Users\Admin\AppData\Roaming\win.exe
MD5
99e166082b19603ff6c4cbebd2641813

SHA1
407f1729ca0abe94a3202789522807683dfe57aa

SHA256
52b98cca3167f7f97a7ae7729aeddee0b2280a18841d692697bd6dea415f3abe

SHA512
77a55185038a2070b0b6b72248ec199afa3fc0f2c4b5f649fe46db3647683d6ced86b3071c88719c07a77cb269fb1ffdc72fc7ac37cdcaa472c249a3fb5d7b0f

Download Submit
memory/316-70-0x0000000000000000-mapping.dmp

Download
memory/856-84-0x0000000000000000-mapping.dmp

Download
memory/1004-87-0x0000000000413FA4-mapping.dmp

Download
memory/1004-90-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1256-75-0x0000000000000000-mapping.dmp

Download
memory/1280-68-0x00000000752B1000-0x00000000752B3000-memory.dmp

Filesize
8KB

Download
memory/1280-67-0x0000000000413FA4-mapping.dmp

Download
memory/1280-66-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1280-73-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1316-80-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1316-78-0x0000000000000000-mapping.dmp

Download
memory/1316-85-0x0000000000420000-0x0000000000421000-memory.dmp

Filesize
4KB

Download
memory/1360-60-0x0000000000810000-0x0000000000811000-memory.dmp

Filesize
4KB

Download
memory/1360-63-0x00000000060E0000-0x00000000060E1000-memory.dmp

Filesize
4KB

Download
memory/1360-62-0x0000000000270000-0x00000000002AE000-memory.dmp

Filesize
248KB

Download
memory/1624-74-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1624-69-0x0000000000000000-mapping.dmp

Download
memory/1672-83-0x0000000000000000-mapping.dmp

Download
memory/1784-65-0x0000000000000000-mapping.dmp

Download
memory/1876-64-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads