guloader | 2222cfde2a4fb474984f2dec6e7819fc722889ede5bb9b6bad905e273c52db80

General

Target

CMR CA4653XT -10-10-2023-7.exe
Size

807KB
MD5

6f7d51ec00fe651601b179d7af7be2cf
SHA1

e199b506d0ac0a5c61af8224f69da19a3940a0dc
SHA256

bc1401e81ad110669077ad7e3f0c57fb80b04b06397e5a4d384c7bb80dec4361
SHA512

97f719f94373e7ed2f38e2915b926176909c9da87cc1d579ee5fd21c347f7b56ae2c614a8ed8ed13872d40ff84f081949915ca74eec2cb348ba8a75c27f046bf
SSDEEP

12288:qYoVFrdkb10/dREKj9g6VdKCRTU9aYTd+PGZb8OQEW+G2DsebUk8s:qYoVHkb6TEiW6VdlTtYTd7p8x/7kF

Score

10^/10

guloader downloader persistence

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Loads dropped DLL 2 IoCs

Processes:

CMR CA4653XT -10-10-2023-7.exe

pid process

4368 CMR CA4653XT -10-10-2023-7.exe
4368 CMR CA4653XT -10-10-2023-7.exe

pid	process
4368	CMR CA4653XT -10-10-2023-7.exe
4368	CMR CA4653XT -10-10-2023-7.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

wab.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2890696111-2332180956-3312704074-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Forretningsomraadets = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Mllernes35\\Fnugfri.exe"	wab.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

Processes:

wab.exe

pid process

988 wab.exe
988 wab.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

CMR CA4653XT -10-10-2023-7.exewab.exe

pid process

4368 CMR CA4653XT -10-10-2023-7.exe
988 wab.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

CMR CA4653XT -10-10-2023-7.exe

description pid process target process

PID 4368 set thread context of 988 4368 CMR CA4653XT -10-10-2023-7.exe wab.exe
Drops file in Program Files directory 1 IoCs

Processes:

CMR CA4653XT -10-10-2023-7.exe

description ioc process

File opened for modification C:\Program Files (x86)\Shashlick\communicated.for CMR CA4653XT -10-10-2023-7.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

CMR CA4653XT -10-10-2023-7.exe

pid process

4368 CMR CA4653XT -10-10-2023-7.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

wab.exe

pid process

988 wab.exe

pid	process
988	wab.exe
988	wab.exe

pid	process
4368	CMR CA4653XT -10-10-2023-7.exe
988	wab.exe

description	pid	process	target process
PID 4368 set thread context of 988	4368	CMR CA4653XT -10-10-2023-7.exe	wab.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Shashlick\communicated.for	CMR CA4653XT -10-10-2023-7.exe

pid	process
4368	CMR CA4653XT -10-10-2023-7.exe

pid	process
988	wab.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

CMR CA4653XT -10-10-2023-7.exe

description	pid	process	target process
PID 4368 wrote to memory of 988	4368	CMR CA4653XT -10-10-2023-7.exe	wab.exe
PID 4368 wrote to memory of 988	4368	CMR CA4653XT -10-10-2023-7.exe	wab.exe
PID 4368 wrote to memory of 988	4368	CMR CA4653XT -10-10-2023-7.exe	wab.exe
PID 4368 wrote to memory of 988	4368	CMR CA4653XT -10-10-2023-7.exe	wab.exe
PID 4368 wrote to memory of 988	4368	CMR CA4653XT -10-10-2023-7.exe	wab.exe

C:\Users\Admin\AppData\Local\Temp\CMR CA4653XT -10-10-2023-7.exe
"C:\Users\Admin\AppData\Local\Temp\CMR CA4653XT -10-10-2023-7.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4368

C:\Program Files (x86)\windows mail\wab.exe
"C:\Users\Admin\AppData\Local\Temp\CMR CA4653XT -10-10-2023-7.exe"
2⤵
- Adds Run key to start application
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
PID:988

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsc97BE.tmp\System.dll
Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsc97BE.tmp\System.dll
Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsc97BE.tmp\System.dll
Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/988-56-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-79-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-30-0x0000000077A08000-0x0000000077A09000-memory.dmp

Filesize
4KB

Download
memory/988-58-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-31-0x0000000077981000-0x0000000077AA1000-memory.dmp

Filesize
1.1MB

Download
memory/988-34-0x0000000001070000-0x0000000003247000-memory.dmp

Filesize
33.8MB

Download
memory/988-35-0x0000000001070000-0x0000000003247000-memory.dmp

Filesize
33.8MB

Download
memory/988-36-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-37-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-38-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-39-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-40-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-41-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-42-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-43-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-44-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-45-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-46-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-47-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-50-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-51-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-52-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-53-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-54-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-57-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-28-0x0000000001070000-0x0000000003247000-memory.dmp

Filesize
33.8MB

Download
memory/988-55-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-81-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-29-0x0000000001070000-0x0000000003247000-memory.dmp

Filesize
33.8MB

Download
memory/988-60-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-61-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-62-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-63-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-64-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-66-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-67-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-68-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-69-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-70-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-71-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-72-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-73-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-74-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-75-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-76-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-77-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-78-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-59-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/988-80-0x0000000073410000-0x0000000074664000-memory.dmp

Filesize
18.3MB

Download
memory/4368-25-0x0000000077981000-0x0000000077AA1000-memory.dmp

Filesize
1.1MB

Download
memory/4368-24-0x0000000003290000-0x0000000005467000-memory.dmp

Filesize
33.8MB

Download
memory/4368-26-0x0000000003290000-0x0000000005467000-memory.dmp

Filesize
33.8MB

Download
memory/4368-27-0x0000000074670000-0x0000000074677000-memory.dmp

Filesize
28KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads