446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

Resubmissions

22/05/2023, 08:09

230522-j15zbahf9x 7

08/05/2023, 11:01

230508-m4jf9sac65 7

Analysis

max time kernel
113s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
08/05/2023, 11:01

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General

Target

verybigchimpanzee.exe
Size

344KB
MD5

aec814bf30dd191b641feef457a718ce
SHA1

96c2bea5b416d10a2dae60acd2b7f9c7cebb8115
SHA256

446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89
SHA512

fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0
SSDEEP

6144:SXRrO+JguvyIs1DkhmgPZw6JXAL5+9bbYZQ4:ir/9m3cYZQ

Score

7^/10

collection discovery spyware stealer

Malware Config

Signatures

Checks computer location settings 2 TTPs 4 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	verybigchimpanzee.exe
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	verybigchimpanzee.exe
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	verybigchimpanzee.exe
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	verybigchimpanzee.exe

Executes dropped EXE 6 IoCs

pid	Process
2216	verybigchimpanzee.exe
2908	tor.exe
1360	verybigchimpanzee.exe
1544	tor.exe
4012	verybigchimpanzee.exe
2404	tor.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	verybigchimpanzee.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	verybigchimpanzee.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	verybigchimpanzee.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
59	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5104	1360	WerFault.exe	107
2784	4012	WerFault.exe	114

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
776	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2588	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2216	verybigchimpanzee.exe
2216	verybigchimpanzee.exe
1360	verybigchimpanzee.exe
4012	verybigchimpanzee.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4080	verybigchimpanzee.exe
Token: SeDebugPrivilege	2216	verybigchimpanzee.exe
Token: SeDebugPrivilege	1360	verybigchimpanzee.exe
Token: SeDebugPrivilege	4012	verybigchimpanzee.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2216	verybigchimpanzee.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4080 wrote to memory of 4452	4080	verybigchimpanzee.exe	90
PID 4080 wrote to memory of 4452	4080	verybigchimpanzee.exe	90
PID 4452 wrote to memory of 4160	4452	cmd.exe	92
PID 4452 wrote to memory of 4160	4452	cmd.exe	92
PID 4452 wrote to memory of 2588	4452	cmd.exe	93
PID 4452 wrote to memory of 2588	4452	cmd.exe	93
PID 4452 wrote to memory of 776	4452	cmd.exe	94
PID 4452 wrote to memory of 776	4452	cmd.exe	94
PID 4452 wrote to memory of 2216	4452	cmd.exe	95
PID 4452 wrote to memory of 2216	4452	cmd.exe	95
PID 2216 wrote to memory of 4516	2216	verybigchimpanzee.exe	99
PID 2216 wrote to memory of 4516	2216	verybigchimpanzee.exe	99
PID 2216 wrote to memory of 2908	2216	verybigchimpanzee.exe	102
PID 2216 wrote to memory of 2908	2216	verybigchimpanzee.exe	102
PID 1360 wrote to memory of 1544	1360	verybigchimpanzee.exe	108
PID 1360 wrote to memory of 1544	1360	verybigchimpanzee.exe	108
PID 4012 wrote to memory of 2404	4012	verybigchimpanzee.exe	115
PID 4012 wrote to memory of 2404	4012	verybigchimpanzee.exe	115

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	verybigchimpanzee.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	verybigchimpanzee.exe

C:\Users\Admin\AppData\Local\Temp\verybigchimpanzee.exe
"C:\Users\Admin\AppData\Local\Temp\verybigchimpanzee.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4080
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "verybigchimpanzee" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\verybigchimpanzee.exe" &&START "" "C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4452
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:4160
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:2588
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "verybigchimpanzee" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:776
- - C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe
    "C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    - outlook_office_path
    - outlook_win_path
    PID:2216
  - - C:\Windows\System32\tar.exe
      "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmpD045.tmp" -C "C:\Users\Admin\AppData\Local\8lxyt4fm8n"
      4⤵
      PID:4516
  - - C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe
      "C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt"
      4⤵
      Executes dropped EXE
      PID:2908

C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe
  "C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:1544
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1360 -s 1240
  2⤵
  - Program crash
  PID:5104

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 424 -p 1360 -ip 1360
1⤵
PID:3008

C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4012
- C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe
  "C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:2404
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 4012 -s 1788
  2⤵
  - Program crash
  PID:2784

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 496 -p 4012 -ip 4012
1⤵
PID:5032

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\8lxyt4fm8n\data\cached-microdesc-consensus.tmp

Filesize
2.3MB

MD5
6849db99d9794e52d88fbde6443c3f91

SHA1
193bc65213f19ee543659b398d1dbd15ca8c3566

SHA256
30b4437faa5b91fda6e6e1da4809ec6c5e0e120d7b5ce79daa4bf432eb91d464

SHA512
0627b4aed63af7c422b8da34876bc5b541e67cafb23820f1d6ddad17ebb126f9ec69e31be860189abb6a041eaa39c19b51bede63b5671749403b45d84de5667b

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\data\cached-microdescs.new

Filesize
5.3MB

MD5
34c1b75262c30908ff47c7fbe4247395

SHA1
6a783383df5910046084143b099d7b97c7ab518f

SHA256
25468350ddcf8c1cf615517740569f557704e3c1ac696ea119d2bec3a504cb0e

SHA512
ea4c1745518682f81d7a0665601c04d032856493cc51891a56375565ea3d0f23ee29e6ac3c807e13b8b661bb8f167a41f1c147de87db231daa61d5c853134093

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\host\hostname

Filesize
64B

MD5
f12d2f1f84770495722d8f834c102763

SHA1
c5ac3d295682a1cacbd8ac493db5c0871e72b47a

SHA256
a91d1262e9db7e60bf8ee1ec06816c04ab7d66e039eb445103e065030ca9f2e1

SHA512
783e5accfb4ae608b8b1710a3d35be95303e8ba2fbf9e715a429357f070b480d19831e8ca2a57f0395e9c1cb9b4baeb1432aa2addbbd84c63176a15401715682

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\port.dat

Filesize
4B

MD5
d693d554e0ede0d75f7d2873b015f228

SHA1
dc40b19d71eb00a80ad7bcf2b31df01b46d186a4

SHA256
4495c083aa62a15216df07d836115b860764951298cecac18c81a217aad348f2

SHA512
2a332a61452ba8836671457615ff5d3dc2707b3afce49b81137143b4408dee7d2259286b20b20ae873252909333609706fbad15d5f79e4085e7764c2d2f1eab8

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt

Filesize
218B

MD5
ab87486dca118db893e05d0752242c5f

SHA1
1115c16539ab9a10b4ba109b1d92268b753f83ec

SHA256
d754f48f5335209264cb90897fc0f782946671c451ec49cd1668a37b532d9896

SHA512
644543a5ee5e298573cc0171c08b6e75655893e03911ec8f739024a0352ec042ea9e7d72d5d3b90bf692a1b468210308150266ad06569770217d80d80b6f7847

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\verybigchimpanzee.exe.log

Filesize
847B

MD5
3308a84a40841fab7dfec198b3c31af7

SHA1
4e7ab6336c0538be5dd7da529c0265b3b6523083

SHA256
169bc31a8d1666535977ca170d246a463e6531bb21faab6c48cb4269d9d60b2e

SHA512
97521d5fb94efdc836ea2723098a1f26a7589a76af51358eee17292d29c9325baf53ad6b4496c5ca3e208d1c9b9ad6797a370e2ae378072fc68f5d6e8b73b198

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe

Filesize
344KB

MD5
aec814bf30dd191b641feef457a718ce

SHA1
96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

SHA256
446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

SHA512
fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe

Filesize
344KB

MD5
aec814bf30dd191b641feef457a718ce

SHA1
96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

SHA256
446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

SHA512
fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe

Filesize
344KB

MD5
aec814bf30dd191b641feef457a718ce

SHA1
96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

SHA256
446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

SHA512
fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe

Filesize
344KB

MD5
aec814bf30dd191b641feef457a718ce

SHA1
96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

SHA256
446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

SHA512
fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD045.tmp

Filesize
13.3MB

MD5
89d2d5811c1aff539bb355f15f3ddad0

SHA1
5bb3577c25b6d323d927200c48cd184a3e27c873

SHA256
b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12

SHA512
39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289

Download Submit
memory/1360-209-0x000002276C520000-0x000002276C530000-memory.dmp

Filesize
64KB

Download
memory/2216-178-0x000002C6E6490000-0x000002C6E64A0000-memory.dmp

Filesize
64KB

Download
memory/2216-143-0x000002C6E6490000-0x000002C6E64A0000-memory.dmp

Filesize
64KB

Download
memory/4012-216-0x00000242DC0D0000-0x00000242DC0E0000-memory.dmp

Filesize
64KB

Download
memory/4080-134-0x0000013EF8440000-0x0000013EF8450000-memory.dmp

Filesize
64KB

Download
memory/4080-133-0x0000013EDDCC0000-0x0000013EDDD1C000-memory.dmp

Filesize
368KB

Download