guloader | e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604

General

Target

e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
Size

355KB
MD5

3cd277b692b93cea6874d7879f1134d0
SHA1

074e16af7a0fdc9c8744edd85a72b088c219afb3
SHA256

e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604
SHA512

c163e32f95467881f1bc234a68bd7e1e40081b753d36e9c70cc83c553577b1166de1ac2670379959afe8c84fdb2bd030f8a0fa1b9d076a460db047620aa0a0b3
SSDEEP

6144:TMm4CCe7wZZRdeg+FWMqn1g0qmaV0UnuBAPm5P9LX29AS+tPoc+2fvwPsgzG:TMwSdN+FWJghmzAPmdBjW4fZwG

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 7 IoCs

pid	Process
2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\aminah.ini	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
1996	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2216 set thread context of 1996	2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe	93

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\nonresidentiary\pachisis.ini	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
File opened for modification	C:\Program Files (x86)\Common Files\forebyggelsen.Ove10	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.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	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wab.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 1996	2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe	93
PID 2216 wrote to memory of 1996	2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe	93
PID 2216 wrote to memory of 1996	2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe	93
PID 2216 wrote to memory of 1996	2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe	93
PID 2216 wrote to memory of 1996	2216	e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe	93

C:\Users\Admin\AppData\Local\Temp\e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe
"C:\Users\Admin\AppData\Local\Temp\e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Program Files (x86)\windows mail\wab.exe
  "C:\Users\Admin\AppData\Local\Temp\e422323e3d0333b32a7dfbaf49befecd314d7e969d5848e71e07096ebc106604N.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:1996

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\AppData\Local\Temp\nss7CCB.tmp\LangDLL.dll

Filesize
5KB

MD5
08de81a4584f5201086f57a7a93ed83b

SHA1
266a6ecc8fb7dca115e6915cd75e2595816841a8

SHA256
4883cd4231744be2dca4433ef62824b7957a3c16be54f8526270402d9413ebe6

SHA512
b72e7cea5ce1f4dc64e65a1f683a3ef9e3fa2dc45cf421f569eb461f1fdcc0caf4ff62a872e62b400579f567c6ff9fc3c2e6e020cdca89d96015502c803a09b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nss7CCB.tmp\System.dll

Filesize
12KB

MD5
6e55a6e7c3fdbd244042eb15cb1ec739

SHA1
070ea80e2192abc42f358d47b276990b5fa285a9

SHA256
acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506

SHA512
2d504b74da38edc967e3859733a2a9cacd885db82f0ca69bfb66872e882707314c54238344d45945dc98bae85772aceef71a741787922d640627d3c8ae8f1c35

Download Submit
memory/1996-38-0x0000000002280000-0x0000000003756000-memory.dmp

Filesize
20.8MB

Download
memory/1996-35-0x0000000002280000-0x0000000003756000-memory.dmp

Filesize
20.8MB

Download
memory/1996-36-0x0000000077028000-0x0000000077029000-memory.dmp

Filesize
4KB

Download
memory/1996-37-0x0000000077045000-0x0000000077046000-memory.dmp

Filesize
4KB

Download
memory/1996-39-0x0000000001020000-0x0000000002274000-memory.dmp

Filesize
18.3MB

Download
memory/1996-40-0x0000000076FA1000-0x00000000770C1000-memory.dmp

Filesize
1.1MB

Download
memory/2216-32-0x0000000004A10000-0x0000000005EE6000-memory.dmp

Filesize
20.8MB

Download
memory/2216-33-0x0000000076FA1000-0x00000000770C1000-memory.dmp

Filesize
1.1MB

Download
memory/2216-34-0x0000000073E05000-0x0000000073E06000-memory.dmp

Filesize
4KB

Download
memory/2216-31-0x0000000004A10000-0x0000000005EE6000-memory.dmp

Filesize
20.8MB

Download
memory/2216-46-0x0000000004A10000-0x0000000005EE6000-memory.dmp

Filesize
20.8MB

Download

Analysis

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