guloader | ceb4c98e16542d62830e3cfc3267522c208bd92c9a0ee0c8b715ecf1f63c2a26

General

Target

PO 00009876660887666000.exe
Size

756KB
MD5

a17e477f9d45342182f01cac527c0c1f
SHA1

403e5d7d981f01b967e36dd98e06e70c9d7acf0c
SHA256

783b5b92ea44666e1521eed1d7688f1bdf9044e83ac39258f9905397f52677dd
SHA512

d3d8d4cf712a175ca0d61b44cab482d49166c15228c04c5c1da0984f80c40a9f848a2407f8696a660d6567ee1ee7468bbd95b1876f891be68a5028a2477c849a
SSDEEP

12288:52SLJDgeOPVpmYLlKmxvIv2NeXLoSIlAz44XsZZqStdNx57YDXmpcD:5hLJwrmSsmqv2Ne7oSZMX7jftYD2uD

Score

10^/10

guloader discovery downloader execution

Malware Config

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Loads dropped DLL 1 IoCs

Processes:

PO 00009876660887666000.exe

pid process

2392 PO 00009876660887666000.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

powershell.exewabmig.exe

pid process

752 powershell.exe
1416 wabmig.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 752 set thread context of 1416 752 powershell.exe wabmig.exe
Drops file in Program Files directory 1 IoCs

Processes:

PO 00009876660887666000.exe

description ioc process

File opened for modification C:\Program Files (x86)\Triolein\uropfrelsen.tir PO 00009876660887666000.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

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

System Information Discovery
T1082

pid	process
2392	PO 00009876660887666000.exe

description	pid	process	target process
PID 752 set thread context of 1416	752	powershell.exe	wabmig.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Triolein\uropfrelsen.tir	PO 00009876660887666000.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

powershell.exewabmig.exePO 00009876660887666000.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wabmig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO 00009876660887666000.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exe

pid	process
752	powershell.exe
752	powershell.exe
752	powershell.exe
752	powershell.exe
752	powershell.exe
752	powershell.exe
752	powershell.exe
752	powershell.exe
752	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

powershell.exe

pid process

752 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 752 powershell.exe

description	pid	process
Token: SeDebugPrivilege	752	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

PO 00009876660887666000.exepowershell.exe

description	pid	process	target process
PID 2392 wrote to memory of 752	2392	PO 00009876660887666000.exe	powershell.exe
PID 2392 wrote to memory of 752	2392	PO 00009876660887666000.exe	powershell.exe
PID 2392 wrote to memory of 752	2392	PO 00009876660887666000.exe	powershell.exe
PID 752 wrote to memory of 1416	752	powershell.exe	wabmig.exe
PID 752 wrote to memory of 1416	752	powershell.exe	wabmig.exe
PID 752 wrote to memory of 1416	752	powershell.exe	wabmig.exe
PID 752 wrote to memory of 1416	752	powershell.exe	wabmig.exe
PID 752 wrote to memory of 1416	752	powershell.exe	wabmig.exe

C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe
"C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle minimized "$Oem=Get-Content 'C:\Users\Admin\AppData\Roaming\djellabaer\Champagnizing183.Ret86';$Skydeklar93=$Oem.SubString(53372,3);.$Skydeklar93($Oem)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:752
- - C:\Program Files (x86)\windows mail\wabmig.exe
    "C:\Program Files (x86)\windows mail\wabmig.exe"
    3⤵
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    PID:1416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ju20gv5i.1vh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsaA113.tmp\nsExec.dll

Filesize
6KB

MD5
3d366250fcf8b755fce575c75f8c79e4

SHA1
2ebac7df78154738d41aac8e27d7a0e482845c57

SHA256
8bdd996ae4778c6f829e2bcb651c55efc9ec37eeea17d259e013b39528dddbb6

SHA512
67d2d88de625227ccd2cb406b4ac3a215d1770d385c985a44e2285490f49b45f23ce64745b24444e2a0f581335fda02e913b92781043e8dfd287844435ba9094

Download Submit
C:\Users\Admin\AppData\Roaming\djellabaer\Champagnizing183.Ret86

Filesize
52KB

MD5
e7c25fcd57bcd42038143a6928274367

SHA1
ccfab30faef7de037ae6bcfdd144a2e6b10b1455

SHA256
187adbae17615b37ae386ebadb4347a41f2a3e994939e832e96f342d91f9d916

SHA512
1ead97118d2c03e5ddf13412dfa2477c3f11ecbda54ba7439d24206c0f5cffb80581b47ef0ab32cf8b35e8a089f78fb84792b8e154b1e10a3a7e29f914c77969

Download Submit
C:\Users\Admin\AppData\Roaming\djellabaer\Uruguayererne.Dec

Filesize
323KB

MD5
c63b35457e3f441b055e33bf5fefe527

SHA1
a667f3c9aab680e32649c448a82acfc6248547ee

SHA256
5fb4c0b14e27e026650eac4da2101b83d70c3a39f8cc008ab5e5c4fcd7837b00

SHA512
3532bbc907ca4a2633550d9eff54325108d8592413138b3397014ae50e13c03cf7f96595dfa42350ee966c1b1e329c7a4e810a019d77c08a7045c4f28d70ba34

Download Submit
memory/752-19-0x0000000005E80000-0x0000000005EE6000-memory.dmp

Filesize
408KB

Download
memory/752-40-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-18-0x00000000056B0000-0x00000000056D2000-memory.dmp

Filesize
136KB

Download
memory/752-20-0x0000000005F60000-0x0000000005FC6000-memory.dmp

Filesize
408KB

Download
memory/752-16-0x00000000056E0000-0x0000000005D08000-memory.dmp

Filesize
6.2MB

Download
memory/752-15-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-30-0x0000000005FD0000-0x0000000006324000-memory.dmp

Filesize
3.3MB

Download
memory/752-31-0x0000000006610000-0x000000000662E000-memory.dmp

Filesize
120KB

Download
memory/752-32-0x00000000066B0000-0x00000000066FC000-memory.dmp

Filesize
304KB

Download
memory/752-33-0x0000000006B60000-0x0000000006BF6000-memory.dmp

Filesize
600KB

Download
memory/752-35-0x0000000006C00000-0x0000000006C22000-memory.dmp

Filesize
136KB

Download
memory/752-34-0x0000000006B10000-0x0000000006B2A000-memory.dmp

Filesize
104KB

Download
memory/752-36-0x0000000007C70000-0x0000000008214000-memory.dmp

Filesize
5.6MB

Download
memory/752-14-0x0000000002F90000-0x0000000002FC6000-memory.dmp

Filesize
216KB

Download
memory/752-38-0x00000000088A0000-0x0000000008F1A000-memory.dmp

Filesize
6.5MB

Download
memory/752-17-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-41-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-42-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-43-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-44-0x000000007329E000-0x000000007329F000-memory.dmp

Filesize
4KB

Download
memory/752-13-0x000000007329E000-0x000000007329F000-memory.dmp

Filesize
4KB

Download
memory/752-46-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-48-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-47-0x0000000008F20000-0x000000000B64D000-memory.dmp

Filesize
39.2MB

Download
memory/752-49-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-50-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-52-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/752-60-0x0000000073290000-0x0000000073A40000-memory.dmp

Filesize
7.7MB

Download
memory/1416-54-0x0000000000E00000-0x0000000002054000-memory.dmp

Filesize
18.3MB

Download
memory/1416-53-0x0000000002060000-0x000000000478D000-memory.dmp

Filesize
39.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads