remcos | 49630168d264eaf442a51ac629b22598afb6d9e127a7c2313f5fa13be41c95dc

General

Target

17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
Size

482KB
MD5

ccab8be1b5d0ec4ede3ecb02a9551180
SHA1

f170b1ad7d2aaee7d81c820d5a9d20877b7cca9c
SHA256

49630168d264eaf442a51ac629b22598afb6d9e127a7c2313f5fa13be41c95dc
SHA512

c2861c1cd105a8682926671beb0b622ca8c536e6c94f96876c96aecd794aabaa15c01fedb3e66210246d15096836e2f1cecf878a336fa8029c9ac07c39f508e4
SSDEEP

6144:bTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZmAX4cr2T4:bTlrYw1RUh3NFn+N5WfIQIjbs/Zm5T4

Score

10^/10

remcos ezeife collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

ezeife

C2

closen.kozow.com:2404

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-CDP1EM
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 9 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/2224-16-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3448-15-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3020-24-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3020-30-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3448-28-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3020-20-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3448-12-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2224-13-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2224-38-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3448-15-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3448-28-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3448-12-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2224-16-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2224-13-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2224-38-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1228 set thread context of 2224	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	102
PID 1228 set thread context of 3448	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	103
PID 1228 set thread context of 3020	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	104

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2224	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
2224	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
3020	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
3020	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
2224	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
2224	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3020	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 2224	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	102
PID 1228 wrote to memory of 2224	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	102
PID 1228 wrote to memory of 2224	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	102
PID 1228 wrote to memory of 3448	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	103
PID 1228 wrote to memory of 3448	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	103
PID 1228 wrote to memory of 3448	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	103
PID 1228 wrote to memory of 3020	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	104
PID 1228 wrote to memory of 3020	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	104
PID 1228 wrote to memory of 3020	1228	17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe	104

C:\Users\Admin\AppData\Local\Temp\17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Users\Admin\AppData\Local\Temp\17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\xgesxrwnjtoiqxxeuyb"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2224
- C:\Users\Admin\AppData\Local\Temp\17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\hbkdykhpxbgmaetidjomld"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:3448
- C:\Users\Admin\AppData\Local\Temp\17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17257307446d2d2990dfa7f8d43acc2caad03e86776087a4660c3bfc636a9c02b09252085d196.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\sdpwzurjsjyrcshmmuinwqnwf"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3020

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 --field-trial-handle=4348,i,1828333185976713750,7918646547767660928,262144 --variations-seed-version --mojo-platform-channel-handle=4408 /prefetch:8
1⤵
PID:3460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
07f803fca891677bff46e864c7370a11

SHA1
970e88a84c044dd98a42f3b4b165176b9a622eb8

SHA256
8d7f8dc0d6c0ffcb3567cb0e58192466fd6496898c1ebafabfc3bd365290cf3a

SHA512
e5922b6cd020affd81f2a01a7237668a8f11ff02be15632f68eb05375f022160e60566ffb9d99e3d724f356abaac178771ff589056aa0c96469854daaede1b1f

Download Submit
C:\Users\Admin\AppData\Local\Temp\xgesxrwnjtoiqxxeuyb

Filesize
4KB

MD5
cda83eba5a004554ccdc061fd3df499c

SHA1
58ff2ecb9d47be10335e104896c87c62dc328523

SHA256
e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

SHA512
f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

Download Submit
memory/1228-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1228-44-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1228-45-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1228-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1228-41-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2224-13-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2224-16-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2224-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2224-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2224-10-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3020-30-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3020-17-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3020-19-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3020-20-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3020-24-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3448-11-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3448-12-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3448-28-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3448-15-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3448-8-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

Sharing