guloader | 39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d

General

Target

Commande No 00007 de M.N.S. S.A. 24000127 MNS Distribution.exe
Size

548KB
MD5

edeb34f392872f3c9e220bc9dcf9ba86
SHA1

e9fb6ff7cd47ec7b08391f4c1ecc1e684bf28ff7
SHA256

39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d
SHA512

f33bc39692838cc94ae0ed6aedddfcecb8fd564de6de0d81a258ece57eba04cb7820f1fe834e48b4e0cbce95409449514bb645e69584ad62e0439fea306af424
SSDEEP

12288:47YvE3TaaFpfEwmgfwwQxeoKGaGsIMcgLvlU2eZysZMNue:bENj7JgaRe0VN9

Score

10^/10

guloader downloader persistence

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\Emraud = "%Skraastillinger% -windowstyle minimized $Boplskommunens=(Get-ItemProperty -Path 'HKCU:\\Somervillite\\').Efs;%Skraastillinger% ($Boplskommunens)"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

Processes:

wab.exe

pid process

2764 wab.exe
2764 wab.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

powershell.exewab.exe

pid process

2788 powershell.exe
2764 wab.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 2788 set thread context of 2764 2788 powershell.exe wab.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

2840 reg.exe

pid	process
2764	wab.exe
2764	wab.exe

description	pid	process	target process
PID 2788 set thread context of 2764	2788	powershell.exe	wab.exe

pid	process
2840	reg.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exe

pid	process
2788	powershell.exe
2788	powershell.exe
2788	powershell.exe
2788	powershell.exe
2788	powershell.exe
2788	powershell.exe
2788	powershell.exe
2788	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

powershell.exe

pid process

2788 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2788 powershell.exe

description	pid	process
Token: SeDebugPrivilege	2788	powershell.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

Commande No 00007 de M.N.S. S.A. 24000127 MNS Distribution.exepowershell.exewab.execmd.exe

description	pid	process	target process
PID 2924 wrote to memory of 2788	2924	Commande No 00007 de M.N.S. S.A. 24000127 MNS Distribution.exe	powershell.exe
PID 2924 wrote to memory of 2788	2924	Commande No 00007 de M.N.S. S.A. 24000127 MNS Distribution.exe	powershell.exe
PID 2924 wrote to memory of 2788	2924	Commande No 00007 de M.N.S. S.A. 24000127 MNS Distribution.exe	powershell.exe
PID 2924 wrote to memory of 2788	2924	Commande No 00007 de M.N.S. S.A. 24000127 MNS Distribution.exe	powershell.exe
PID 2788 wrote to memory of 2244	2788	powershell.exe	cmd.exe
PID 2788 wrote to memory of 2244	2788	powershell.exe	cmd.exe
PID 2788 wrote to memory of 2244	2788	powershell.exe	cmd.exe
PID 2788 wrote to memory of 2244	2788	powershell.exe	cmd.exe
PID 2788 wrote to memory of 2764	2788	powershell.exe	wab.exe
PID 2788 wrote to memory of 2764	2788	powershell.exe	wab.exe
PID 2788 wrote to memory of 2764	2788	powershell.exe	wab.exe
PID 2788 wrote to memory of 2764	2788	powershell.exe	wab.exe
PID 2788 wrote to memory of 2764	2788	powershell.exe	wab.exe
PID 2788 wrote to memory of 2764	2788	powershell.exe	wab.exe
PID 2764 wrote to memory of 2532	2764	wab.exe	cmd.exe
PID 2764 wrote to memory of 2532	2764	wab.exe	cmd.exe
PID 2764 wrote to memory of 2532	2764	wab.exe	cmd.exe
PID 2764 wrote to memory of 2532	2764	wab.exe	cmd.exe
PID 2532 wrote to memory of 2840	2532	cmd.exe	reg.exe
PID 2532 wrote to memory of 2840	2532	cmd.exe	reg.exe
PID 2532 wrote to memory of 2840	2532	cmd.exe	reg.exe
PID 2532 wrote to memory of 2840	2532	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\Commande No 00007 de M.N.S. S.A. 24000127 MNS Distribution.exe
"C:\Users\Admin\AppData\Local\Temp\Commande No 00007 de M.N.S. S.A. 24000127 MNS Distribution.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2924

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" -windowstyle hidden "$Interlucent=Get-Content 'C:\Users\Admin\AppData\Local\salpetersyrefabrikkers\occupying\Nonsynoptic168\unvolubly\Langtrkkendes\Pelletising.Art';$Sciography=$Interlucent.SubString(57898,3);.$Sciography($Interlucent)"
2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2788

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" "/c set /A 1^^0"
3⤵
PID:2244

C:\Program Files (x86)\windows mail\wab.exe
"C:\Program Files (x86)\windows mail\wab.exe"
3⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:2764

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Emraud" /t REG_EXPAND_SZ /d "%Skraastillinger% -windowstyle minimized $Boplskommunens=(Get-ItemProperty -Path 'HKCU:\Somervillite\').Efs;%Skraastillinger% ($Boplskommunens)"
4⤵
- Suspicious use of WriteProcessMemory
PID:2532

C:\Windows\SysWOW64\reg.exe
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Emraud" /t REG_EXPAND_SZ /d "%Skraastillinger% -windowstyle minimized $Boplskommunens=(Get-ItemProperty -Path 'HKCU:\Somervillite\').Efs;%Skraastillinger% ($Boplskommunens)"
5⤵
- Adds Run key to start application
- Modifies registry key
PID:2840

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

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

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357
Filesize
1KB

MD5
a266bb7dcc38a562631361bbf61dd11b

SHA1
3b1efd3a66ea28b16697394703a72ca340a05bd5

SHA256
df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

SHA512
0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
344B

MD5
bd0bd8515a99a8ce285981a69ec62902

SHA1
a56bae9eb27112179b07e8897ef1ed9584351201

SHA256
a619dad6a4e58b650c945c828bcf904e18a92ce027a32a711df1f398df414ee8

SHA512
cad76875fa51112e06b6f8e023f5661b7675e9277359c143fe37aa9bf87f8d2e622c8b540e48e8125e0022ede8d49e1dd31f497b480262b3eaf3bb72947ac252

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357
Filesize
242B

MD5
d532009cc6407d0275bd6617f74b36d6

SHA1
07c80aa06ce7269ff8b51e87a366569d552b131b

SHA256
e00a53dba5009854239b3b305f478400dfef387d81baec7c73b48d89b0509608

SHA512
bf63aa66d3c7eea258829ab123390a27b5cb9033b03d9d0cabdeeaa40d2a76b9914abd4a7673e66f32cd5d2e61372c89f79b6bba405fe64f12eed56d90611a57

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar7332.tmp
Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
C:\Users\Admin\AppData\Local\salpetersyrefabrikkers\occupying\Nonsynoptic168\unvolubly\Langtrkkendes\Pelletising.Art
Filesize
56KB

MD5
19779840eecfc141420a08cb9a741962

SHA1
0f0a168bc292914da146f667557ff5f07b0f5ae5

SHA256
de1fc8dc64b49c5ae8c2c9c45e7dd4d2aa154f845e99a8e8fa08b5abf23d38a7

SHA512
d3be08e433f93bafc5d53ea6e91c53e01d755bf1c61e4006aa184da35644b343bd72d0ddbee9820db107c2df212dc4a51a4e06ebf3cf6c1e45ed250f2b383723

Download Submit
C:\Users\Admin\AppData\Local\salpetersyrefabrikkers\occupying\Nonsynoptic168\unvolubly\Langtrkkendes\Raciality.Fly
Filesize
331KB

MD5
4fef7ec4aa88c70e0e50af8288552883

SHA1
93fb76eb5d63d8bd92cb962e8f6ca7c8e7ae5950

SHA256
286b9df7b42e7f021bb5eebe1b6e00d6178f01a4b308244cabfd955cd91b5d60

SHA512
9f386415243a791b58853c00c378aa57d3aa69f3e690e452220da92d5b4888a0c35099b20ebc9672b0797bcd58091fca8d1f0bd75a616b164896531b8206b1cb

Download Submit
memory/2764-21-0x0000000077BC0000-0x0000000077D69000-memory.dmp

Filesize
1.7MB

Download
memory/2764-129-0x0000000001870000-0x0000000006E9F000-memory.dmp

Filesize
86.2MB

Download
memory/2764-131-0x0000000077DB0000-0x0000000077E86000-memory.dmp

Filesize
856KB

Download
memory/2764-23-0x0000000077DB0000-0x0000000077E86000-memory.dmp

Filesize
856KB

Download
memory/2764-22-0x0000000077DE6000-0x0000000077DE7000-memory.dmp

Filesize
4KB

Download
memory/2788-13-0x0000000002850000-0x0000000002890000-memory.dmp

Filesize
256KB

Download
memory/2788-20-0x0000000077DB0000-0x0000000077E86000-memory.dmp

Filesize
856KB

Download
memory/2788-19-0x0000000002850000-0x0000000002890000-memory.dmp

Filesize
256KB

Download
memory/2788-18-0x00000000744B0000-0x0000000074A5B000-memory.dmp

Filesize
5.7MB

Download
memory/2788-17-0x0000000077BC0000-0x0000000077D69000-memory.dmp

Filesize
1.7MB

Download
memory/2788-16-0x0000000006760000-0x000000000BD8F000-memory.dmp

Filesize
86.2MB

Download
memory/2788-15-0x0000000002C60000-0x0000000002C64000-memory.dmp

Filesize
16KB

Download
memory/2788-8-0x0000000002850000-0x0000000002890000-memory.dmp

Filesize
256KB

Download
memory/2788-10-0x0000000002850000-0x0000000002890000-memory.dmp

Filesize
256KB

Download
memory/2788-9-0x00000000744B0000-0x0000000074A5B000-memory.dmp

Filesize
5.7MB

Download
memory/2788-7-0x00000000744B0000-0x0000000074A5B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads