remcos | 87a00c4c09ffb99509f199799a434545c1a3db4fe1b31690c6f1b0244ebf1d06

General

Target

Urgente RFQ_AP65425652_032421,pdf.exe
Size

752KB
MD5

0a04a9709b0ed80c0bbd55c1fa40dbad
SHA1

9bd51b9b23cc00bb939308a119d044406087d58f
SHA256

03e8013bba11c526e074a525d7dc96153a7794d579880cb6446e57a37c8be72a
SHA512

812f12a9f2f547674dcc11c78b81910744ab1aada376158b1905392df035254aaf7f62a102d93eb9176f261d017ba77d070a9ac0f4cb4ce5404956b91bc43519

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

ongod4life.ddns.net:4344

Signatures

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

Processes:

Netplwiz.exeNetplwiz.exe

pid process

1064 Netplwiz.exe
1796 Netplwiz.exe

pid	process
1064	Netplwiz.exe
1796	Netplwiz.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Urgente RFQ_AP65425652_032421,pdf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\Bgcwvs = "C:\\Users\\Public\\Libraries\\svwcgB.url"	Urgente RFQ_AP65425652_032421,pdf.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

Urgente RFQ_AP65425652_032421,pdf.execmd.exe

description	pid	process	target process
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 544	736	Urgente RFQ_AP65425652_032421,pdf.exe	DpiScaling.exe
PID 736 wrote to memory of 1144	736	Urgente RFQ_AP65425652_032421,pdf.exe	cmd.exe
PID 736 wrote to memory of 1144	736	Urgente RFQ_AP65425652_032421,pdf.exe	cmd.exe
PID 736 wrote to memory of 1144	736	Urgente RFQ_AP65425652_032421,pdf.exe	cmd.exe
PID 736 wrote to memory of 1144	736	Urgente RFQ_AP65425652_032421,pdf.exe	cmd.exe
PID 1144 wrote to memory of 360	1144	cmd.exe	cmd.exe
PID 1144 wrote to memory of 360	1144	cmd.exe	cmd.exe
PID 1144 wrote to memory of 360	1144	cmd.exe	cmd.exe
PID 1144 wrote to memory of 360	1144	cmd.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\Urgente RFQ_AP65425652_032421,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Urgente RFQ_AP65425652_032421,pdf.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:736

C:\Windows\SysWOW64\DpiScaling.exe
C:\Windows\System32\DpiScaling.exe
2⤵
PID:544

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Public\stt.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:1144

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /K C:\Users\Public\PXOR.bat
3⤵
PID:360

C:\Windows \System32\Netplwiz.exe
"C:\Windows \System32\Netplwiz.exe"
4⤵
- Executes dropped EXE
PID:1064

C:\Windows \System32\Netplwiz.exe
"C:\Windows \System32\Netplwiz.exe"
4⤵
- Executes dropped EXE
PID:1796

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\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\Netplwiz.exe
MD5
f94b7fb6dac49844d03c7087b2d8b472

SHA1
0e84139fced0ee8ef929d0bd5f01559a7dcf1db0

SHA256
46e31f337ed0d9a6fe3f159abc91c9b9b6a6062982bbcd84a51784d7128e7ae4

SHA512
d63878f94f7699e4cc63c2cd885c29455e0c423d32dba750e4fc3aa74dbaca80a1a4b176719213b9fc6584de6a40cddff7864c7fb4cfba13dfcb437a36e41b80

Download Submit
memory/360-83-0x0000000002150000-0x0000000002245000-memory.dmp

Filesize
980KB

Download
memory/360-70-0x0000000000000000-mapping.dmp

Download
memory/544-77-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/544-66-0x0000000000000000-mapping.dmp

Download
memory/544-80-0x0000000010540000-0x0000000010564000-memory.dmp

Filesize
144KB

Download
memory/544-79-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/544-81-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/544-82-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/736-65-0x0000000075891000-0x0000000075893000-memory.dmp

Filesize
8KB

Download
memory/736-60-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/736-62-0x00000000003E0000-0x00000000003FA000-memory.dmp

Filesize
104KB

Download
memory/1144-68-0x0000000000000000-mapping.dmp

Download

Analysis

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