guloader | a43a0cacbfaf5aa649acc0d29ce25855ea92c50af2729f30c5f2ecfad376ef4d

Analysis

max time kernel
138s
max time network
129s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07-02-2023 12:26

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General

Target

Solicitud de Oferta 07-02-23·pdf.exe
Size

560KB
MD5

a28a8c381f7460d2a35f10186ca34dd6
SHA1

0ea66a29cca600bdd91f3505884d74dd7df09d9f
SHA256

a43a0cacbfaf5aa649acc0d29ce25855ea92c50af2729f30c5f2ecfad376ef4d
SHA512

6c594c33ecf2069a53e7c83ab817a3ab8250ea8796889a854d2d11a26f95f20132721e4e5df963c587ef4f4b154388b35b7b732e24375ee9f79927a3938b37e2
SSDEEP

12288:0ky6tuXby71v1f+fWQ8+N8v2ocCSivrlicg3ULa+kdkP/:M6tuLM1v1f+Tt8vcKG3UGdkP/

Score

10^/10

guloader downloader

Malware Config

Signatures

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

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Solicitud de Oferta 07-02-23·pdf.exeSolicitud de Oferta 07-02-23·pdf.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	Solicitud de Oferta 07-02-23·pdf.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	Solicitud de Oferta 07-02-23·pdf.exe

Loads dropped DLL 20 IoCs

Processes:

Solicitud de Oferta 07-02-23·pdf.exe

pid	process
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe
1896	Solicitud de Oferta 07-02-23·pdf.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

Solicitud de Oferta 07-02-23·pdf.exe

pid process

952 Solicitud de Oferta 07-02-23·pdf.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

Solicitud de Oferta 07-02-23·pdf.exeSolicitud de Oferta 07-02-23·pdf.exe

pid process

1896 Solicitud de Oferta 07-02-23·pdf.exe
952 Solicitud de Oferta 07-02-23·pdf.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

Solicitud de Oferta 07-02-23·pdf.exe

description pid process target process

PID 1896 set thread context of 952 1896 Solicitud de Oferta 07-02-23·pdf.exe Solicitud de Oferta 07-02-23·pdf.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

Solicitud de Oferta 07-02-23·pdf.exe

pid process

1896 Solicitud de Oferta 07-02-23·pdf.exe

pid	process
952	Solicitud de Oferta 07-02-23·pdf.exe

description	pid	process	target process
PID 1896 set thread context of 952	1896	Solicitud de Oferta 07-02-23·pdf.exe	Solicitud de Oferta 07-02-23·pdf.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Solicitud de Oferta 07-02-23·pdf.exe

description	pid	process	target process
PID 1896 wrote to memory of 952	1896	Solicitud de Oferta 07-02-23·pdf.exe	Solicitud de Oferta 07-02-23·pdf.exe
PID 1896 wrote to memory of 952	1896	Solicitud de Oferta 07-02-23·pdf.exe	Solicitud de Oferta 07-02-23·pdf.exe
PID 1896 wrote to memory of 952	1896	Solicitud de Oferta 07-02-23·pdf.exe	Solicitud de Oferta 07-02-23·pdf.exe
PID 1896 wrote to memory of 952	1896	Solicitud de Oferta 07-02-23·pdf.exe	Solicitud de Oferta 07-02-23·pdf.exe
PID 1896 wrote to memory of 952	1896	Solicitud de Oferta 07-02-23·pdf.exe	Solicitud de Oferta 07-02-23·pdf.exe
PID 1896 wrote to memory of 952	1896	Solicitud de Oferta 07-02-23·pdf.exe	Solicitud de Oferta 07-02-23·pdf.exe
PID 1896 wrote to memory of 952	1896	Solicitud de Oferta 07-02-23·pdf.exe	Solicitud de Oferta 07-02-23·pdf.exe
PID 1896 wrote to memory of 952	1896	Solicitud de Oferta 07-02-23·pdf.exe	Solicitud de Oferta 07-02-23·pdf.exe

C:\Users\Admin\AppData\Local\Temp\Solicitud de Oferta 07-02-23·pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Solicitud de Oferta 07-02-23·pdf.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Users\Admin\AppData\Local\Temp\Solicitud de Oferta 07-02-23·pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Solicitud de Oferta 07-02-23·pdf.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
\Users\Admin\AppData\Local\Temp\nsoED1F.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/952-86-0x0000000077C00000-0x0000000077DA9000-memory.dmp

Filesize
1.7MB

Download
memory/952-90-0x0000000000401000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/952-96-0x0000000077DE0000-0x0000000077F60000-memory.dmp

Filesize
1.5MB

Download
memory/952-79-0x00000000004032FE-mapping.dmp

Download
memory/952-94-0x0000000001470000-0x0000000004FA7000-memory.dmp

Filesize
59.2MB

Download
memory/952-93-0x0000000000400000-0x000000000055C000-memory.dmp

Filesize
1.4MB

Download
memory/952-82-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/952-83-0x0000000001470000-0x0000000004FA7000-memory.dmp

Filesize
59.2MB

Download
memory/952-87-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1896-54-0x0000000076181000-0x0000000076183000-memory.dmp

Filesize
8KB

Download
memory/1896-75-0x0000000003860000-0x0000000007397000-memory.dmp

Filesize
59.2MB

Download
memory/1896-81-0x0000000077DE0000-0x0000000077F60000-memory.dmp

Filesize
1.5MB

Download
memory/1896-80-0x0000000077C00000-0x0000000077DA9000-memory.dmp

Filesize
1.7MB

Download
memory/1896-95-0x0000000077DE0000-0x0000000077F60000-memory.dmp

Filesize
1.5MB

Download
memory/1896-76-0x0000000003860000-0x0000000007397000-memory.dmp

Filesize
59.2MB

Download