nymaim | 16b57adbc06a4ad058aa05ccfdeb85b57c8ffc22f7a04e268cd9cb7ea6579653

Analysis

max time kernel
90s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
30/11/2022, 15:17

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 2.0MB
Sample221130-sn3svsbe33
SHA256 16b57adbc06a4ad058aa05ccfdeb85b57c8ffc22f7a04e268cd9cb7ea6579653
MD5 fb99a467de119cd127cc2a50ef123f87
SHA1 3cdf9b3fe3fb89f61c87456adeaca842d6371417
SHA512 43661e0aecd1e61145f2773098a2e88b0dd58eb8e69bd1a8a14372b5f122b2a5b029c1654327ccf30d6b529aa54e587026c908592274984c482d41d592eeb5e7
SSDEEP 49152:Ys0SOIpOw7duYyQcMDY1tWToUC497+5aJYAG5cyk:Ys0zw7du7hBAoU17+AJYXcyk
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
3444	is-QVU2S.tmp
4972	PrintFolders.exe
4912	P7e9vbqVXWHKZq.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	PrintFolders.exe

Loads dropped DLL 1 IoCs

pid	Process
3444	is-QVU2S.tmp

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

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PrintFolders\is-UM9C5.tmp	is-QVU2S.tmp
File created	C:\Program Files (x86)\PrintFolders\is-K47TE.tmp	is-QVU2S.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-QVU2S.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-QVU2S.tmp
File created	C:\Program Files (x86)\PrintFolders\is-GM0V3.tmp	is-QVU2S.tmp
File created	C:\Program Files (x86)\PrintFolders\is-LU7VN.tmp	is-QVU2S.tmp
File created	C:\Program Files (x86)\PrintFolders\is-6K3S1.tmp	is-QVU2S.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-QVU2S.tmp
File created	C:\Program Files (x86)\PrintFolders\is-M1KSB.tmp	is-QVU2S.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
3832	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4972	PrintFolders.exe
4972	PrintFolders.exe
4972	PrintFolders.exe
4972	PrintFolders.exe
4972	PrintFolders.exe
4972	PrintFolders.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3832	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 3444	1656	file.exe	81
PID 1656 wrote to memory of 3444	1656	file.exe	81
PID 1656 wrote to memory of 3444	1656	file.exe	81
PID 3444 wrote to memory of 4972	3444	is-QVU2S.tmp	82
PID 3444 wrote to memory of 4972	3444	is-QVU2S.tmp	82
PID 3444 wrote to memory of 4972	3444	is-QVU2S.tmp	82
PID 4972 wrote to memory of 4912	4972	PrintFolders.exe	83
PID 4972 wrote to memory of 4912	4972	PrintFolders.exe	83
PID 4972 wrote to memory of 4912	4972	PrintFolders.exe	83
PID 4972 wrote to memory of 456	4972	PrintFolders.exe	91
PID 4972 wrote to memory of 456	4972	PrintFolders.exe	91
PID 4972 wrote to memory of 456	4972	PrintFolders.exe	91
PID 456 wrote to memory of 3832	456	cmd.exe	93
PID 456 wrote to memory of 3832	456	cmd.exe	93
PID 456 wrote to memory of 3832	456	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Users\Admin\AppData\Local\Temp\is-3OQVE.tmp\is-QVU2S.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-3OQVE.tmp\is-QVU2S.tmp" /SL4 $801D0 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1871357 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:3444
- - C:\Program Files (x86)\PrintFolders\PrintFolders.exe
    "C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4972
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\P7e9vbqVXWHKZq.exe
      4⤵
      Executes dropped EXE
      PID:4912
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:456
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "PrintFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3832

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 3.1MB
SHA256 f5a2e07dd70eb0e68b7770a564fbd51b11a635c33a0d8c5476f81ccca96ed0a0
MD5 5fdfc5178310d49fdc5434b49381b3dd
SHA1 a29d31ef10596e672bbc5af600730e7a64d84359
SHA512 1af795188dc7a0060083289f8a2cdae90774053342e107e18106925444b7cc429575d84630287be6a4a5a97a9881288790a1cc01b2fd782b3fa206979b91e72e
SSDEEP 24576:ItgoH0lv+is9e5TLCXNVKviFRPoW4VYi0ackIueZ0XoROaduSsHlZIjuxE/oFWq/:mUFe9e5TLCDiqPoHLa25/ZwYAxLY2Keu
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 3.1MB
SHA256 f5a2e07dd70eb0e68b7770a564fbd51b11a635c33a0d8c5476f81ccca96ed0a0
MD5 5fdfc5178310d49fdc5434b49381b3dd
SHA1 a29d31ef10596e672bbc5af600730e7a64d84359
SHA512 1af795188dc7a0060083289f8a2cdae90774053342e107e18106925444b7cc429575d84630287be6a4a5a97a9881288790a1cc01b2fd782b3fa206979b91e72e
SSDEEP 24576:ItgoH0lv+is9e5TLCXNVKviFRPoW4VYi0ackIueZ0XoROaduSsHlZIjuxE/oFWq/:mUFe9e5TLCDiqPoHLa25/ZwYAxLY2Keu
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-QVU2S.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-3OQVE.tmp\is-QVU2S.tmp
Size 643KB
SHA256 b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
MD5 363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1 a4cdb756698ed28f522956166a6292e9e309dd9c
SHA512 b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
SSDEEP 12288:Jh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv4xp:f5NoqWolrP837JzHvA6yknyWFxv4xp
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-QVU2S.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-3OQVE.tmp\is-QVU2S.tmp
Size 643KB
SHA256 b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
MD5 363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1 a4cdb756698ed28f522956166a6292e9e309dd9c
SHA512 b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
SSDEEP 12288:Jh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv4xp:f5NoqWolrP837JzHvA6yknyWFxv4xp
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-RERLE.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

P7e9vbqVXWHKZq.exe

Path C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\P7e9vbqVXWHKZq.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

P7e9vbqVXWHKZq.exe

Path C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\P7e9vbqVXWHKZq.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1656-151-0x0000000000400000-0x0000000000413000-memory.dmp

Download

memory/1656-132-0x0000000000400000-0x0000000000413000-memory.dmp

Download

memory/1656-134-0x0000000000400000-0x0000000000413000-memory.dmp

Download

memory/1656-156-0x0000000000400000-0x0000000000413000-memory.dmp

Download

memory/4972-142-0x0000000000400000-0x000000000151B000-memory.dmp

Download

memory/4972-143-0x0000000000400000-0x000000000151B000-memory.dmp

Download

memory/4972-147-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/4972-152-0x0000000000400000-0x000000000151B000-memory.dmp

Download

memory/4972-155-0x0000000000400000-0x000000000151B000-memory.dmp

Download