guloader | 2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa

General

Target

2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe
Size

813KB
MD5

0526616c9a9fdaadbb1cb7de145cf45b
SHA1

039f2c096d17540376434b4fd48038329b256e03
SHA256

2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa
SHA512

4426fc30be5f3fa28076a14d0739d0f7d84be191d2a579e8e5cd2e2f4c35249ae9222bcbe5f4f03373232e3a8907444cdfdbf995e666f10d477b0119bfb566f5
SSDEEP

24576:GT5ewakMlLQj9cFbRtjD6seSE94Zqq5uIum9u:Ub9ajDVum9u

Score

10^/10

guloader discovery downloader persistence

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Crink = "C:\\Users\\Admin\\AppData\\Roaming\\Indias\\Rootier.exe"	msiexec.exe

Blocklisted process makes network request 11 IoCs

flow	pid	Process
5	1956	msiexec.exe
7	1956	msiexec.exe
8	1956	msiexec.exe
9	1956	msiexec.exe
10	1956	msiexec.exe
11	1956	msiexec.exe
12	1956	msiexec.exe
13	1956	msiexec.exe
14	1956	msiexec.exe
15	1956	msiexec.exe
16	1956	msiexec.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe
1956	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2180 set thread context of 1956	2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe	30

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\Renegading59.Lau	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\meditance\solvens.uns	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe
File opened for modification	C:\Windows\resources\styrthjelms.ini	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe

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 2 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	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 1956	2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe	30
PID 2180 wrote to memory of 1956	2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe	30
PID 2180 wrote to memory of 1956	2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe	30
PID 2180 wrote to memory of 1956	2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe	30
PID 2180 wrote to memory of 1956	2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe	30
PID 2180 wrote to memory of 1956	2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe	30
PID 2180 wrote to memory of 1956	2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe	30
PID 2180 wrote to memory of 1956	2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe	30
PID 2180 wrote to memory of 1956	2180	2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe	30

C:\Users\Admin\AppData\Local\Temp\2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe
"C:\Users\Admin\AppData\Local\Temp\2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Users\Admin\AppData\Local\Temp\2504ae284627bb65f3d2c32ba7d09f9d6f379eaa85a1712cb3a7cb66baf6a4fa.exe"
  2⤵
  - Adds Run key to start application
  - Blocklisted process makes network request
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:1956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

1

T1112

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab9945.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar9977.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Windows\Resources\styrthjelms.ini

Filesize
57B

MD5
fd6025a4e37e613fc3b95c4b9dcde998

SHA1
bc9ece04e4a3ea27ed5f6249aa52cbc45d2cb1c3

SHA256
3370956ec8f0d20143598826298e97b6a07ebc7aba20becd4a7545e75847c7a8

SHA512
4c882c456b282b5d16a8257e4f00f26c83df390ac83675c030aceb244cbb44c4350e9c7902fa43613ecfbb1030a9c6ff96fcf4581d2519c23072954d107b36f3

Download Submit
\Users\Admin\AppData\Local\Temp\nsz5A91.tmp\System.dll

Filesize
12KB

MD5
d968cb2b98b83c03a9f02dd9b8df97dc

SHA1
d784c9b7a92dce58a5038beb62a48ff509e166a0

SHA256
a4ec98011ef99e595912718c1a1bf1aa67bfc2192575729d42f559d01f67b95c

SHA512
2ee41dc68f329a1519a8073ece7d746c9f3bf45d8ef3b915deb376af37e26074134af5f83c8af0fe0ab227f0d1acca9f37e5ca7ae37c46c3bcc0331fe5e2b97e

Download Submit
memory/1956-295-0x0000000077980000-0x0000000077B29000-memory.dmp

Filesize
1.7MB

Download
memory/1956-329-0x0000000000400000-0x0000000000581000-memory.dmp

Filesize
1.5MB

Download
memory/2180-292-0x00000000040B0000-0x00000000069A5000-memory.dmp

Filesize
41.0MB

Download
memory/2180-293-0x0000000077981000-0x0000000077A82000-memory.dmp

Filesize
1.0MB

Download
memory/2180-294-0x0000000077980000-0x0000000077B29000-memory.dmp

Filesize
1.7MB

Download
memory/2180-296-0x00000000040B0000-0x00000000069A5000-memory.dmp

Filesize
41.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads