guloader | 61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155

General

Target

JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe
Size

68KB
MD5

0162ff949c8c278e62c3eb57fd510d42
SHA1

dd8a4d3bd394bd1f5492640a8a26722110d58e03
SHA256

61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155
SHA512

f1bbecc6a7e4c4b38a76826d202aeae590c94fde92391b120f52ff7584be13e4b0230aa62f3efdcf3bcb7279dfe949bc319506a9f7af8df1a24dab5bb18a868d
SSDEEP

768:jwXBOpfK7ckw8TfuXZcYqomMjk5Nw7HqeuMmPAPkGB02WQq0/o4JCChP:jwsK7ck/zuXZAMCiq1Mm4nBPWQjo4Jd

Score

10^/10

guloader discovery downloader

Malware Config

Extracted

Family

guloader

C2

https://onedrive.live.com/download?cid=1B6E6032CE5E4651&resid=1B6E6032CE5E4651%212074&authkey=AOvT7-22YNVt_qw

xor.base64

Signatures

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

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2516	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe
2300	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2516 set thread context of 2300	2516	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe	30

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	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2516	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2516	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2300	2516	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe	30
PID 2516 wrote to memory of 2300	2516	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe	30
PID 2516 wrote to memory of 2300	2516	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe	30
PID 2516 wrote to memory of 2300	2516	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe	30
PID 2516 wrote to memory of 2300	2516	JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61b0c23817191551450282f600447e54a47297c2685eec81598a3daf63b16155.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\CabB176.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarB198.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2300-6-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2300-8-0x0000000076D60000-0x0000000076F09000-memory.dmp

Filesize
1.7MB

Download
memory/2300-277-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2516-2-0x0000000000550000-0x0000000000559000-memory.dmp

Filesize
36KB

Download
memory/2516-3-0x0000000076D61000-0x0000000076E62000-memory.dmp

Filesize
1.0MB

Download
memory/2516-4-0x0000000076D60000-0x0000000076F09000-memory.dmp

Filesize
1.7MB

Download
memory/2516-5-0x0000000000550000-0x0000000000559000-memory.dmp

Filesize
36KB

Download

Analysis

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