guloader | bb8377bb31db42e63e3cf78007ab6c09febbef943daafd038ade1ac355ea2db1

Analysis

max time kernel
134s
max time network
104s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29/08/2024, 01:19

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
TRIAL_ORDER_CP.exe
Size 990KB
Sample240829-bpr93sybml
SHA256 bdd5b953bef085550bb5891e8d3c7248b5b16fcbba1bb26e2be18c4801d1a98e
MD5 5a14d64b70fc7106cb6c14be1aaa7482
SHA1 0612c6f0f1aa18f6e96de3d7ae39193981d9bb95
SHA512 9f8075010e5f4b8a4dcac7a4fda9a947459ffaf29c34a454a0f94c749703f28d734b39b2a6359de6a1a067d0551927cfecc39610427277ef26c4eb83fe67def7
SSDEEP 12288:RGUeTvuO1BJdtGrY8dMLMankl6QQGMi7B1mSwIhCjVn:RGPB4Y8d2JKpQWB1mSlCjV
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 10 IoCs

pid	Process
1360	TRIAL_ORDER_CP.exe
1360	TRIAL_ORDER_CP.exe
1360	TRIAL_ORDER_CP.exe
1360	TRIAL_ORDER_CP.exe
1360	TRIAL_ORDER_CP.exe
1360	TRIAL_ORDER_CP.exe
1360	TRIAL_ORDER_CP.exe
1360	TRIAL_ORDER_CP.exe
1360	TRIAL_ORDER_CP.exe
1360	TRIAL_ORDER_CP.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
344	TRIAL_ORDER_CP.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1360	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1360 set thread context of 344	1360	TRIAL_ORDER_CP.exe	95

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\Bydemaadens.pea	TRIAL_ORDER_CP.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\barberedes\kramer.ini	TRIAL_ORDER_CP.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	TRIAL_ORDER_CP.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TRIAL_ORDER_CP.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe
344	TRIAL_ORDER_CP.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1360	TRIAL_ORDER_CP.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 344	1360	TRIAL_ORDER_CP.exe	95
PID 1360 wrote to memory of 344	1360	TRIAL_ORDER_CP.exe	95
PID 1360 wrote to memory of 344	1360	TRIAL_ORDER_CP.exe	95
PID 1360 wrote to memory of 344	1360	TRIAL_ORDER_CP.exe	95
PID 1360 wrote to memory of 344	1360	TRIAL_ORDER_CP.exe	95

C:\Users\Admin\AppData\Local\Temp\TRIAL_ORDER_CP.exe
"C:\Users\Admin\AppData\Local\Temp\TRIAL_ORDER_CP.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Users\Admin\AppData\Local\Temp\TRIAL_ORDER_CP.exe
  "C:\Users\Admin\AppData\Local\Temp\TRIAL_ORDER_CP.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:344

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

LangDLL.dll

Path C:\Users\Admin\AppData\Local\Temp\nsmA440.tmp\LangDLL.dll
Size 5KB
SHA256 131aa0df90c08dce2eecee46cce8759e9afff04bf15b7b0002c2a53ae5e92c36
MD5 549ee11198143574f4d9953198a09fe8
SHA1 2e89ba5f30e1c1c4ce517f28ec1505294bb6c4c1
SHA512 0fb4cea4fd320381fe50c52d1c198261f0347d6dcee857917169fcc3e2083ed4933beff708e81d816787195cca050f3f5f9c5ac9cc7f781831b028ef5714bec8
SSDEEP 48:S46+/sTKYKxbWsptIp5tCZ0iVEAWyMEv9v/ft2O2B8mWofjLl:z+uPbO5tCZBVEAWyMEFv2Cm9L
MD5 SHA1 SHA512 SSDEEP

Submit Download

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsmA440.tmp\System.dll
Size 12KB
SHA256 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6
MD5 192639861e3dc2dc5c08bb8f8c7260d5
SHA1 58d30e460609e22fa0098bc27d928b689ef9af78
SHA512 6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc
SSDEEP 192:ljHcQ0qWTlt7wi5Aj/lM0sEWD/wtYbBjpNQybC7y+XZqE0QPi:R/Qlt7wiij/lMRv/9V4bfr
MD5 SHA1 SHA512 SSDEEP

Submit Download

UserInfo.dll

Path C:\Users\Admin\AppData\Local\Temp\nsmA440.tmp\UserInfo.dll
Size 4KB
SHA256 a921cc9cc4af332be96186d60d2539cb413dfa44cfd73e85687f9338505ff85e
MD5 f8b6dd1f9620be4ef2ad1e81fb6b79fa
SHA1 f06c8c8650335bace41c8dbe73307cbe4e61b3b1
SHA512 f15811088ecde4cd0c038db2c278b7214e41728e382b25c65c2eb491bc0379c075841398e8c99e8cceba8be7e8342bc69d35836ebe9b12ebebff48d01d5fa61a
MD5 SHA1 SHA512

Submit Download

nsDialogs.dll

Path C:\Users\Admin\AppData\Local\Temp\nsmA440.tmp\nsDialogs.dll
Size 9KB
SHA256 89a82c4849c21dfe765052681e1fad02d2d7b13c8b5075880c52423dca72a912
MD5 b7d61f3f56abf7b7ff0d4e7da3ad783d
SHA1 15ab5219c0e77fd9652bc62ff390b8e6846c8e3e
SHA512 6467c0de680fadb8078bdaa0d560d2b228f5a22d4d8358a1c7d564c6ebceface5d377b870eaf8985fbee727001da569867554154d568e3b37f674096bbafafb8
SSDEEP 96:ooEv02zUu56FcS817eTaXx85qHFcUcxSgB5PKtAtoniJninnt3DVEB3YMNqkzfFc:ooEvCu5e81785qHFcU0PuAw0uyyIFc
MD5 SHA1 SHA512 SSDEEP

Submit Download

nsExec.dll

Path C:\Users\Admin\AppData\Local\Temp\nsmA440.tmp\nsExec.dll
Size 7KB
SHA256 2cd3a2d4053954db1196e2526545c36dfc138c6de9b81f6264632f3132843c77
MD5 11092c1d3fbb449a60695c44f9f3d183
SHA1 b89d614755f2e943df4d510d87a7fc1a3bcf5a33
SHA512 c182e0a1f0044b67b4b9fb66cef9c4955629f6811d98bbffa99225b03c43c33b1e85cacabb39f2c45ead81cd85e98b201d5f9da4ee0038423b1ad947270c134a
SSDEEP 96:JgzdzBzMDhOZZDbXf5GsWvSv1ckne94SDbYkvML1HT1fUNQaSGYuHIDQ:JDQHDb2vSuOc41ZfUNQZGdHA
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/344-50-0x0000000000400000-0x0000000001654000-memory.dmp

Download

memory/344-48-0x0000000000400000-0x0000000001654000-memory.dmp

Download

memory/344-49-0x0000000001660000-0x0000000003736000-memory.dmp

Download

memory/344-52-0x0000000000400000-0x0000000001654000-memory.dmp

Download

memory/344-53-0x0000000001660000-0x0000000003736000-memory.dmp

Download

memory/344-54-0x0000000000400000-0x0000000001654000-memory.dmp

Download

memory/344-57-0x0000000000400000-0x0000000001654000-memory.dmp

Download

memory/1360-44-0x00000000045E0000-0x00000000066B6000-memory.dmp

Download

memory/1360-45-0x0000000077521000-0x0000000077641000-memory.dmp

Download

memory/1360-47-0x0000000074175000-0x0000000074176000-memory.dmp

Download

memory/1360-46-0x0000000077521000-0x0000000077641000-memory.dmp

Download

memory/1360-43-0x00000000045E0000-0x00000000066B6000-memory.dmp

Download

memory/1360-51-0x00000000045E0000-0x00000000066B6000-memory.dmp

Download