modiloader | bc5e5b32cee20470d93b3152c3cb5faeee1434a11e07b5ac5efaa76fe1221034

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
31-01-2023 16:46

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General

Target

27cef70a62f86294bd81b32ac6f96890.exe
Size

760KB
MD5

27cef70a62f86294bd81b32ac6f96890
SHA1

b45279594d4d7f9b161458593ac5d007d8758afa
SHA256

bc5e5b32cee20470d93b3152c3cb5faeee1434a11e07b5ac5efaa76fe1221034
SHA512

f72a064fffc02f3ce14df3e66f383234da687f12911213d604a67616563df797f9d1928f4398403362854c36d95067fe9dc8130e6542c95407ec187286d39667
SSDEEP

12288:nXCSJ638aXV+o1zl3qJVkdRTYJO8t8q0NVlstZo1NkB0lEKjh4jieNt:yUk+o10JVE+Jl8FNHkmNkBPKhheN

Score

10^/10

modiloader remcos sky-yak persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

SKY-YAK

www.christopherferr.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
12345
mouse_option
false
mutex
Rmc-E68T3F
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

ModiLoader Second Stage 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4612-132-0x00000000022C0000-0x00000000022EC000-memory.dmp	modiloader_stage2

Executes dropped EXE 2 IoCs

Processes:

easinvoker.exevyulearF.pif

pid process

4700 easinvoker.exe
1328 vyulearF.pif
Loads dropped DLL 1 IoCs

Processes:

easinvoker.exe

pid process

4700 easinvoker.exe

pid	process
4700	easinvoker.exe
1328	vyulearF.pif

pid	process
4700	easinvoker.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

27cef70a62f86294bd81b32ac6f96890.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Fraeluyv = "C:\\Users\\Public\\Libraries\\vyulearF.url"	27cef70a62f86294bd81b32ac6f96890.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

xcopy.exexcopy.exexcopy.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	xcopy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	xcopy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	xcopy.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

4664 PING.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

3188 powershell.exe
3188 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 3188 powershell.exe

pid	process
4664	PING.EXE

pid	process
3188	powershell.exe
3188	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3188	powershell.exe

Suspicious use of WriteProcessMemory 47 IoCs

Processes:

27cef70a62f86294bd81b32ac6f96890.execmd.exeeasinvoker.execmd.exe

description	pid	process	target process
PID 4612 wrote to memory of 368	4612	27cef70a62f86294bd81b32ac6f96890.exe	cmd.exe
PID 4612 wrote to memory of 368	4612	27cef70a62f86294bd81b32ac6f96890.exe	cmd.exe
PID 4612 wrote to memory of 368	4612	27cef70a62f86294bd81b32ac6f96890.exe	cmd.exe
PID 368 wrote to memory of 3992	368	cmd.exe	cmd.exe
PID 368 wrote to memory of 3992	368	cmd.exe	cmd.exe
PID 368 wrote to memory of 3992	368	cmd.exe	cmd.exe
PID 368 wrote to memory of 3484	368	cmd.exe	xcopy.exe
PID 368 wrote to memory of 3484	368	cmd.exe	xcopy.exe
PID 368 wrote to memory of 3484	368	cmd.exe	xcopy.exe
PID 368 wrote to memory of 3388	368	cmd.exe	cmd.exe
PID 368 wrote to memory of 3388	368	cmd.exe	cmd.exe
PID 368 wrote to memory of 3388	368	cmd.exe	cmd.exe
PID 368 wrote to memory of 324	368	cmd.exe	xcopy.exe
PID 368 wrote to memory of 324	368	cmd.exe	xcopy.exe
PID 368 wrote to memory of 324	368	cmd.exe	xcopy.exe
PID 368 wrote to memory of 208	368	cmd.exe	cmd.exe
PID 368 wrote to memory of 208	368	cmd.exe	cmd.exe
PID 368 wrote to memory of 208	368	cmd.exe	cmd.exe
PID 368 wrote to memory of 224	368	cmd.exe	xcopy.exe
PID 368 wrote to memory of 224	368	cmd.exe	xcopy.exe
PID 368 wrote to memory of 224	368	cmd.exe	xcopy.exe
PID 368 wrote to memory of 4700	368	cmd.exe	easinvoker.exe
PID 368 wrote to memory of 4700	368	cmd.exe	easinvoker.exe
PID 4700 wrote to memory of 3672	4700	easinvoker.exe	cmd.exe
PID 4700 wrote to memory of 3672	4700	easinvoker.exe	cmd.exe
PID 368 wrote to memory of 4664	368	cmd.exe	PING.EXE
PID 368 wrote to memory of 4664	368	cmd.exe	PING.EXE
PID 368 wrote to memory of 4664	368	cmd.exe	PING.EXE
PID 3672 wrote to memory of 3188	3672	cmd.exe	powershell.exe
PID 3672 wrote to memory of 3188	3672	cmd.exe	powershell.exe
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif
PID 4612 wrote to memory of 1328	4612	27cef70a62f86294bd81b32ac6f96890.exe	vyulearF.pif

C:\Users\Admin\AppData\Local\Temp\27cef70a62f86294bd81b32ac6f96890.exe
"C:\Users\Admin\AppData\Local\Temp\27cef70a62f86294bd81b32ac6f96890.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4612
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\FraeluyvO.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:368
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
    3⤵
    PID:3992
- - C:\Windows\SysWOW64\xcopy.exe
    xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
    3⤵
    - Enumerates system info in registry
    PID:3484
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
    3⤵
    PID:3388
- - C:\Windows\SysWOW64\xcopy.exe
    xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
    3⤵
    - Enumerates system info in registry
    PID:324
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
    3⤵
    PID:208
- - C:\Windows\SysWOW64\xcopy.exe
    xcopy "KDECO.bat" "C:\Windows \System32\" /K /D /H /Y
    3⤵
    - Enumerates system info in registry
    PID:224
- - C:\Windows \System32\easinvoker.exe
    "C:\Windows \System32\easinvoker.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:4700
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3672
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -WindowStyle Hidden -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
        5⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3188
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 6
    3⤵
    - Runs ping.exe
    PID:4664
- C:\Users\Public\Libraries\vyulearF.pif
  C:\Users\Public\Libraries\vyulearF.pif
  2⤵
  - Executes dropped EXE
  PID:1328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Public\Libraries\FraeluyvO.bat

Filesize
411B

MD5
55aba243e88f6a6813c117ffe1fa5979

SHA1
210b9b028a4b798c837a182321dbf2e50d112816

SHA256
5a11c5641c476891aa30e7ecfa57c2639f6827d8640061f73e9afec0adbbd7d2

SHA512
68009c4c9bbea75a3bfa9f79945d30957a95691ea405d031b4ca7f1cb47504bbc768fcae59173885743ad4d6cfdd2313c3fe0acb515e34e5c809ecdc7f45e307

Download Submit
C:\Users\Public\Libraries\KDECO.bat

Filesize
155B

MD5
213c60adf1c9ef88dc3c9b2d579959d2

SHA1
e4d2ad7b22b1a8b5b1f7a702b303c7364b0ee021

SHA256
37c59c8398279916cfce45f8c5e3431058248f5e3bef4d9f5c0f44a7d564f82e

SHA512
fe897d9caa306b0e761b2fd61bb5dc32a53bfaad1ce767c6860af4e3ad59c8f3257228a6e1072dab0f990cb51c59c648084ba419ac6bc5c0a99bdffa569217b7

Download Submit
C:\Users\Public\Libraries\easinvoker.exe

Filesize
128KB

MD5
231ce1e1d7d98b44371ffff407d68b59

SHA1
25510d0f6353dbf0c9f72fc880de7585e34b28ff

SHA256
30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

SHA512
520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

Download Submit
C:\Users\Public\Libraries\netutils.dll

Filesize
109KB

MD5
08aecbf3114e569921df32fb5c8a1dd6

SHA1
9e2fd6ba9b66844292fb49a79fc874ad52f5ecba

SHA256
7c1a178a5629027a0bb19c743e8505b280a5b6dc22088cd1a6a0132e32d79fc2

SHA512
e1895567460a4945690e4d88ada31a41ae7d499eb887108578027cde5aaaa2cfc28779a00fc66d01e49c3e4354caada18a14d61b57fbec40b38de23fd1c91d57

Download Submit
C:\Users\Public\Libraries\vyulearF.pif

Filesize
118KB

MD5
6035096bf8f5f72d46a8ade5586a0c7b

SHA1
2a821cf6889377435b2028016d72efe3bb8fb8da

SHA256
9a38991461288014473dd1d6de00238a69d14ff36bc5a555ac4d88479da1e0af

SHA512
83319b115b62d377b349f954d367860eec63ba51cd6ac4c7a51d887734fffed1045c64fc6f5c8552a038524c71e9a7e52f48374d28f02e828563e11456e93175

Download Submit
C:\Users\Public\Libraries\vyulearF.pif

Filesize
118KB

MD5
6035096bf8f5f72d46a8ade5586a0c7b

SHA1
2a821cf6889377435b2028016d72efe3bb8fb8da

SHA256
9a38991461288014473dd1d6de00238a69d14ff36bc5a555ac4d88479da1e0af

SHA512
83319b115b62d377b349f954d367860eec63ba51cd6ac4c7a51d887734fffed1045c64fc6f5c8552a038524c71e9a7e52f48374d28f02e828563e11456e93175

Download Submit
C:\Windows \System32\easinvoker.exe

Filesize
128KB

MD5
231ce1e1d7d98b44371ffff407d68b59

SHA1
25510d0f6353dbf0c9f72fc880de7585e34b28ff

SHA256
30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

SHA512
520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

Download Submit
C:\Windows \System32\easinvoker.exe

Filesize
128KB

MD5
231ce1e1d7d98b44371ffff407d68b59

SHA1
25510d0f6353dbf0c9f72fc880de7585e34b28ff

SHA256
30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

SHA512
520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

Download Submit
C:\Windows \System32\netutils.dll

Filesize
109KB

MD5
08aecbf3114e569921df32fb5c8a1dd6

SHA1
9e2fd6ba9b66844292fb49a79fc874ad52f5ecba

SHA256
7c1a178a5629027a0bb19c743e8505b280a5b6dc22088cd1a6a0132e32d79fc2

SHA512
e1895567460a4945690e4d88ada31a41ae7d499eb887108578027cde5aaaa2cfc28779a00fc66d01e49c3e4354caada18a14d61b57fbec40b38de23fd1c91d57

Download Submit
C:\Windows \System32\netutils.dll

Filesize
109KB

MD5
08aecbf3114e569921df32fb5c8a1dd6

SHA1
9e2fd6ba9b66844292fb49a79fc874ad52f5ecba

SHA256
7c1a178a5629027a0bb19c743e8505b280a5b6dc22088cd1a6a0132e32d79fc2

SHA512
e1895567460a4945690e4d88ada31a41ae7d499eb887108578027cde5aaaa2cfc28779a00fc66d01e49c3e4354caada18a14d61b57fbec40b38de23fd1c91d57

Download Submit
C:\windows \system32\KDECO.bat

Filesize
155B

MD5
213c60adf1c9ef88dc3c9b2d579959d2

SHA1
e4d2ad7b22b1a8b5b1f7a702b303c7364b0ee021

SHA256
37c59c8398279916cfce45f8c5e3431058248f5e3bef4d9f5c0f44a7d564f82e

SHA512
fe897d9caa306b0e761b2fd61bb5dc32a53bfaad1ce767c6860af4e3ad59c8f3257228a6e1072dab0f990cb51c59c648084ba419ac6bc5c0a99bdffa569217b7

Download Submit
memory/208-142-0x0000000000000000-mapping.dmp

Download
memory/224-143-0x0000000000000000-mapping.dmp

Download
memory/324-140-0x0000000000000000-mapping.dmp

Download
memory/368-134-0x0000000000000000-mapping.dmp

Download
memory/1328-157-0x0000000000000000-mapping.dmp

Download
memory/1328-163-0x0000000000640000-0x00000000006BF000-memory.dmp

Filesize
508KB

Download
memory/1328-162-0x0000000010590000-0x0000000010612000-memory.dmp

Filesize
520KB

Download
memory/1328-164-0x0000000000640000-0x00000000006BF000-memory.dmp

Filesize
508KB

Download
memory/3188-161-0x00007FFEA54C0000-0x00007FFEA5F81000-memory.dmp

Filesize
10.8MB

Download
memory/3188-153-0x0000000000000000-mapping.dmp

Download
memory/3188-154-0x000001B6B2CD0000-0x000001B6B2CF2000-memory.dmp

Filesize
136KB

Download
memory/3188-155-0x00007FFEA54C0000-0x00007FFEA5F81000-memory.dmp

Filesize
10.8MB

Download
memory/3388-139-0x0000000000000000-mapping.dmp

Download
memory/3484-137-0x0000000000000000-mapping.dmp

Download
memory/3672-150-0x0000000000000000-mapping.dmp

Download
memory/3992-136-0x0000000000000000-mapping.dmp

Download
memory/4612-156-0x0000000010590000-0x0000000010612000-memory.dmp

Filesize
520KB

Download
memory/4612-160-0x0000000010590000-0x0000000010612000-memory.dmp

Filesize
520KB

Download
memory/4612-132-0x00000000022C0000-0x00000000022EC000-memory.dmp

Filesize
176KB

Download
memory/4664-151-0x0000000000000000-mapping.dmp

Download
memory/4700-145-0x0000000000000000-mapping.dmp

Download