guloader | 7e485dc6c635c50959ccc4b529a1e8b039eca2c9b1a505c782430c48e9ad16c4

General

Target

DHL AWB and INV.scr.exe
Size

712KB
MD5

e3e28e486e93c0b27fe0453b9e038cb9
SHA1

08335cf5d72c462460627f02dc20773605d09e54
SHA256

7e485dc6c635c50959ccc4b529a1e8b039eca2c9b1a505c782430c48e9ad16c4
SHA512

eb9bf2827836a97b7cd439e9ec834e7a53e56655027b94ebaa4e8ad4de639871e65061f01f9626df3cb936f80be2cd1b316706a1aa2b2625ead6c74036efd147
SSDEEP

12288:LR3BUI4nAZlVqi3Zd9WAp7LE5/Bs+jqP4ARxlXzd46l0xFXc3gIwEL:V3GI4kVfZdsAC/Fo11nl0Pg73L

Score

10^/10

guloader remcos host-2 credential_access discovery downloader rat stealer

Malware Config

Extracted

Family

remcos

Botnet

Host-2

C2

176.65.142.14:6060

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-HM3EZ8
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Detected Nirsoft tools 4 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral1/memory/2292-70-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1832-74-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2684-67-0x0000000000400000-0x000000000047D000-memory.dmp	Nirsoft
behavioral1/memory/2684-65-0x0000000000400000-0x000000000047D000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2292-70-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2684-67-0x0000000000400000-0x000000000047D000-memory.dmp	WebBrowserPassView
behavioral1/memory/2684-65-0x0000000000400000-0x000000000047D000-memory.dmp	WebBrowserPassView

Uses browser remote debugging 2 TTPs 1 IoCs

Can be used control the browser and steal sensitive information such as credentials and session cookies.

credential_access stealer

Steal Web Session Cookie

T1539

Modify Authentication Process

T1556

pid	Process
1744	Chrome.exe

Loads dropped DLL 2 IoCs

pid	Process
816	DHL AWB and INV.scr.exe
816	DHL AWB and INV.scr.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	drive.google.com
3	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
816	DHL AWB and INV.scr.exe
2932	DHL AWB and INV.scr.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\crepe\satanerne.ini	DHL AWB and INV.scr.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	DHL AWB and INV.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DHL AWB and INV.scr.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
816	DHL AWB and INV.scr.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 816 wrote to memory of 2932	816	DHL AWB and INV.scr.exe	30
PID 816 wrote to memory of 2932	816	DHL AWB and INV.scr.exe	30
PID 816 wrote to memory of 2932	816	DHL AWB and INV.scr.exe	30
PID 816 wrote to memory of 2932	816	DHL AWB and INV.scr.exe	30
PID 816 wrote to memory of 2932	816	DHL AWB and INV.scr.exe	30

C:\Users\Admin\AppData\Local\Temp\DHL AWB and INV.scr.exe
"C:\Users\Admin\AppData\Local\Temp\DHL AWB and INV.scr.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:816
- C:\Users\Admin\AppData\Local\Temp\DHL AWB and INV.scr.exe
  "C:\Users\Admin\AppData\Local\Temp\DHL AWB and INV.scr.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2932
- - C:\Program Files\Google\Chrome\Application\Chrome.exe
    --user-data-dir=C:\Users\Admin\AppData\Local\Temp\TmpUserData --headless --remote-debugging-port=9222 --profile-directory="Default"
    3⤵
    - Uses browser remote debugging
    PID:1744
  - - C:\Program Files\Google\Chrome\Application\Chrome.exe
      "C:\Program Files\Google\Chrome\Application\Chrome.exe" --type=crashpad-handler --user-data-dir=C:\Users\Admin\AppData\Local\Temp\TmpUserData /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Local\Temp\TmpUserData\Crashpad --metrics-dir=C:\Users\Admin\AppData\Local\Temp\TmpUserData --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc8,0xcc,0xd0,0x9c,0xd4,0x7fef7789758,0x7fef7789768,0x7fef7789778
      4⤵
      PID:1104
  - - C:\Program Files\Google\Chrome\Application\Chrome.exe
      "C:\Program Files\Google\Chrome\Application\Chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --use-gl=angle --headless --mojo-platform-channel-handle=1148 --field-trial-handle=1032,i,7733195193935485082,6223935030686507665,131072 --disable-features=PaintHolding /prefetch:8
      4⤵
      PID:860
- - C:\Windows\SysWOW64\recover.exe
    C:\Windows\SysWOW64\recover.exe /stext "C:\Users\Admin\AppData\Local\Temp\uswirqlcldgnahqpfpigyqtzt"
    3⤵
    PID:2684
- - C:\Windows\SysWOW64\recover.exe
    C:\Windows\SysWOW64\recover.exe /stext "C:\Users\Admin\AppData\Local\Temp\fmkbsjwwzlyscvmtoavaavoqcyek"
    3⤵
    PID:2292
- - C:\Windows\SysWOW64\recover.exe
    C:\Windows\SysWOW64\recover.exe /stext "C:\Users\Admin\AppData\Local\Temp\poplsbgxntqfnbaxfkiblijzlfwtvze"
    3⤵
    PID:1832

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Modify Authentication Process

1

T1556

Privilege Escalation

Defense Evasion

Modify Authentication Process

1

T1556

Credential Access

Modify Authentication Process

1

T1556

Steal Web Session Cookie

1

T1539

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\TmpUserData\Crashpad\metadata

Filesize
114B

MD5
1d5961bc802656a6d4c19e299eb80748

SHA1
566b8943aa1ceb425a087a3099e2a876c6102c2a

SHA256
e9c6112ed801f333578900d4f09acbe22f46dba055c15449e6e945d5a53db171

SHA512
f2d314d4084c538222fbafd62d6d0245ec9662f9f50459de1bebd7721b8110a919a5dd75fe2478784c2efda0e56d6ee0176b52c185f76e16420e45d8cd2991d3

Download Submit
C:\Users\Admin\AppData\Local\Temp\TmpUserData\Crashpad\reports\abd56c55-40a4-47be-9b6d-9bda1ab3e5ac.dmp

Filesize
574KB

MD5
6e30277204fab877f7011b9d39812091

SHA1
f9b98ca7bbdb87e880fe1cfead8fcedaaf8213dd

SHA256
18521daafcd3dd8becb45b6bc66f7872fadd89ce23f5aab075d3c88767329365

SHA512
4269eb4e8b65ffeb9642a18789d6da20972c87ff6215dbd1023c4873da2aa98506a8ca46fbecfb9fa4be89c93bbab910d726037dff9feaddf1c86b7dad0afe11

Download Submit
C:\Users\Admin\AppData\Local\Temp\TmpUserData\Crashpad\settings.dat

Filesize
40B

MD5
bf68287867fe65bec97743336e0f5314

SHA1
187c239855c5aad9d8569f6470052c4ded290bfb

SHA256
39c291693eb8cf48bbc4d09d85401dad54cbf1d704d2ecc34b3f25bccee558d7

SHA512
9de9cfb1b61e20ed153c69879b8ab79dd7560873fa7a44b0a3344bae58fc8d238f8157eef433a30c7cb0aa9f80f136b14ae2b604fff816880d28a48264d01e70

Download Submit
C:\Users\Admin\AppData\Local\Temp\uswirqlcldgnahqpfpigyqtzt

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\Users\Admin\AppData\Local\Temp\nsjC6F8.tmp\System.dll

Filesize
11KB

MD5
a436db0c473a087eb61ff5c53c34ba27

SHA1
65ea67e424e75f5065132b539c8b2eda88aa0506

SHA256
75ed40311875312617d6711baed0be29fcaee71031ca27a8d308a72b15a51e49

SHA512
908f46a855480af6eacb2fb64de0e60b1e04bbb10b23992e2cf38a4cbebdcd7d3928c4c022d7ad9f7479265a8f426b93eef580afec95570e654c360d62f5e08d

Download Submit
memory/816-18-0x00000000772E1000-0x00000000773E2000-memory.dmp

Filesize
1.0MB

Download
memory/816-19-0x00000000772E0000-0x0000000077489000-memory.dmp

Filesize
1.7MB

Download
memory/1832-72-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1832-74-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1832-73-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2292-69-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2292-66-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2292-70-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2292-68-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2684-67-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/2684-62-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2684-65-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/2684-75-0x00000000772E0000-0x0000000077489000-memory.dmp

Filesize
1.7MB

Download
memory/2932-51-0x0000000036F80000-0x0000000036FB4000-memory.dmp

Filesize
208KB

Download
memory/2932-100-0x0000000035BE0000-0x0000000035BF9000-memory.dmp

Filesize
100KB

Download
memory/2932-54-0x0000000036F80000-0x0000000036FB4000-memory.dmp

Filesize
208KB

Download
memory/2932-45-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2932-59-0x00000000772E0000-0x0000000077489000-memory.dmp

Filesize
1.7MB

Download
memory/2932-55-0x0000000036F80000-0x0000000036FB4000-memory.dmp

Filesize
208KB

Download
memory/2932-49-0x00000000014F0000-0x0000000005F34000-memory.dmp

Filesize
74.3MB

Download
memory/2932-44-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2932-43-0x00000000772E0000-0x0000000077489000-memory.dmp

Filesize
1.7MB

Download
memory/2932-20-0x00000000014F0000-0x0000000005F34000-memory.dmp

Filesize
74.3MB

Download
memory/2932-99-0x0000000035BE0000-0x0000000035BF9000-memory.dmp

Filesize
100KB

Download
memory/2932-96-0x0000000035BE0000-0x0000000035BF9000-memory.dmp

Filesize
100KB

Download
memory/2932-101-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2932-21-0x00000000772E0000-0x0000000077489000-memory.dmp

Filesize
1.7MB

Download
memory/2932-105-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2932-106-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2932-107-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2932-108-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2932-109-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2932-110-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads