guloader | 2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6

General

Target

2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe
Size

1.0MB
MD5

62fed8d2f8c74245e366b5ffc4170325
SHA1

c9ad60cf5921d12fed075927b4cf4623d129a671
SHA256

2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6
SHA512

3dd9b6dba45b75f39a6430fa0a6471dbda9b42cea021b37faefd72eb00fc3886b038afb88b51d9dfd6e313e5cdf07fdc33a026b827d3037dcd291e3d2316d714
SSDEEP

24576:+5TSjeuARbeLYMexXYvRCEOYkYRU2fNYwYtYPY:+kjeu0bx5ovRH1bqyuXOg

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
2796	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe
2796	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2796	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\Gundelet\gleditsia.ini	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2180	2160	WerFault.exe	31

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	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2796	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 2160	2796	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe	31
PID 2796 wrote to memory of 2160	2796	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe	31
PID 2796 wrote to memory of 2160	2796	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe	31
PID 2796 wrote to memory of 2160	2796	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe	31
PID 2796 wrote to memory of 2160	2796	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe	31
PID 2160 wrote to memory of 2180	2160	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe	32
PID 2160 wrote to memory of 2180	2160	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe	32
PID 2160 wrote to memory of 2180	2160	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe	32
PID 2160 wrote to memory of 2180	2160	2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe	32

C:\Users\Admin\AppData\Local\Temp\2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe
"C:\Users\Admin\AppData\Local\Temp\2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Users\Admin\AppData\Local\Temp\2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe
  "C:\Users\Admin\AppData\Local\Temp\2ce2b5ae44364fe9c1f5b46600d3baeffb769dea1dc9b25fcd5a9ab747f417e6.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2160
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2160 -s 104
    3⤵
    - Program crash
    PID:2180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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\Quiddler\markus\superceded\ned.ini

Filesize
34KB

MD5
46d760ff5d80888a54a38d5bd968c3b9

SHA1
074ffba863941492da6fceb711fc6f6d49884d62

SHA256
89da4d13eedf0d1128752be5993608a45d8b1d3377ce852cac6938c0514f7952

SHA512
5c1429bc19c1c154a746ba09376d35293b60a4f95196db3acbbc738d4f3a65c93fc67bdcfc4d15db5485d4bf8cc7bddd8d93c150e2760c88b1bca8aef0cb27c8

Download Submit
\Users\Admin\AppData\Local\Temp\nsoF355.tmp\System.dll

Filesize
11KB

MD5
cf85183b87314359488b850f9e97a698

SHA1
6b6c790037eec7ebea4d05590359cb4473f19aea

SHA256
3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac

SHA512
fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

Download Submit
memory/2160-32-0x0000000001470000-0x00000000024DE000-memory.dmp

Filesize
16.4MB

Download
memory/2160-33-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2160-35-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2796-29-0x0000000003470000-0x00000000044DE000-memory.dmp

Filesize
16.4MB

Download
memory/2796-30-0x00000000777C1000-0x00000000778C2000-memory.dmp

Filesize
1.0MB

Download
memory/2796-31-0x00000000777C0000-0x0000000077969000-memory.dmp

Filesize
1.7MB

Download

Analysis

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