nymaim | 139ea83b0623b718a68232eb8a32bae2bec5d244f00302a2478339b5c8d8d9bc

General

Target

file.exe
Size

1.4MB
MD5

1b1e74381d2c0a6455412ded11651abc
SHA1

ef41d98690bd21fde5776b73b0ba11e0a87d53e5
SHA256

139ea83b0623b718a68232eb8a32bae2bec5d244f00302a2478339b5c8d8d9bc
SHA512

03c01d36e7c865931bc82afacb0ed75ad8e496c0623de705e407cca161aa200ff826a2dc99b2ae9281bfcc288a0a7184fb58bd772784388f4cb26457696cb503
SSDEEP

24576:tizxwTIdOSdnWpUfPWJsK6mrSN7d4r3uJZkLyr9LdxbvDGYgZIY7eCLxYio:GxwxeaKuQBM+AgvxbriNeVio

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

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

Processes:

is-5NJLK.tmpPrintFolders.exeps6tUh6mXMQNO.exe

pid process

2796 is-5NJLK.tmp
5040 PrintFolders.exe
4748 ps6tUh6mXMQNO.exe

pid	process
2796	is-5NJLK.tmp
5040	PrintFolders.exe
4748	ps6tUh6mXMQNO.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

Processes:

PrintFolders.exe

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

Processes:

is-5NJLK.tmp

pid process

2796 is-5NJLK.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

pid	process
2796	is-5NJLK.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-5NJLK.tmp

description	ioc	process
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-5NJLK.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-5NJLK.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-5NJLK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-NESOC.tmp	is-5NJLK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-T82L3.tmp	is-5NJLK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-SVNPR.tmp	is-5NJLK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-AJVRR.tmp	is-5NJLK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-617P5.tmp	is-5NJLK.tmp
File created	C:\Program Files (x86)\PrintFolders\is-A6LBT.tmp	is-5NJLK.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

Processes:

taskkill.exe

pid process

5024 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

PrintFolders.exe

pid process

5040 PrintFolders.exe
5040 PrintFolders.exe
5040 PrintFolders.exe
5040 PrintFolders.exe
5040 PrintFolders.exe
5040 PrintFolders.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 5024 taskkill.exe

pid	process
5024	taskkill.exe

pid	process
5040	PrintFolders.exe
5040	PrintFolders.exe
5040	PrintFolders.exe
5040	PrintFolders.exe
5040	PrintFolders.exe
5040	PrintFolders.exe

description	pid	process
Token: SeDebugPrivilege	5024	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-5NJLK.tmpPrintFolders.execmd.exe

description	pid	process	target process
PID 2200 wrote to memory of 2796	2200	file.exe	is-5NJLK.tmp
PID 2200 wrote to memory of 2796	2200	file.exe	is-5NJLK.tmp
PID 2200 wrote to memory of 2796	2200	file.exe	is-5NJLK.tmp
PID 2796 wrote to memory of 5040	2796	is-5NJLK.tmp	PrintFolders.exe
PID 2796 wrote to memory of 5040	2796	is-5NJLK.tmp	PrintFolders.exe
PID 2796 wrote to memory of 5040	2796	is-5NJLK.tmp	PrintFolders.exe
PID 5040 wrote to memory of 4748	5040	PrintFolders.exe	ps6tUh6mXMQNO.exe
PID 5040 wrote to memory of 4748	5040	PrintFolders.exe	ps6tUh6mXMQNO.exe
PID 5040 wrote to memory of 4748	5040	PrintFolders.exe	ps6tUh6mXMQNO.exe
PID 5040 wrote to memory of 4684	5040	PrintFolders.exe	cmd.exe
PID 5040 wrote to memory of 4684	5040	PrintFolders.exe	cmd.exe
PID 5040 wrote to memory of 4684	5040	PrintFolders.exe	cmd.exe
PID 4684 wrote to memory of 5024	4684	cmd.exe	taskkill.exe
PID 4684 wrote to memory of 5024	4684	cmd.exe	taskkill.exe
PID 4684 wrote to memory of 5024	4684	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2200

C:\Users\Admin\AppData\Local\Temp\is-JUK2S.tmp\is-5NJLK.tmp
"C:\Users\Admin\AppData\Local\Temp\is-JUK2S.tmp\is-5NJLK.tmp" /SL4 $40056 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1229054 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2796

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:5040

C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\ps6tUh6mXMQNO.exe
4⤵
- Executes dropped EXE
PID:4748

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:4684

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "PrintFolders.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:5024

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.6MB

MD5
86f45772e89bb207b8a491b568517b9e

SHA1
7d154a666a134be460d975473e17a25e5fafff9c

SHA256
c13e562c44c05b09a7cce3049992eb27452d01dafa0b5c92ad3112445e25770c

SHA512
d5dec17c54f2243618661aa54edd93b0679b60dd690d7d06f8470dc1ac533855102b3d26420540b84e7baf9921056692caf6553a045a0d08a2cbd57d897cf7ad

Download Submit
C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.6MB

MD5
86f45772e89bb207b8a491b568517b9e

SHA1
7d154a666a134be460d975473e17a25e5fafff9c

SHA256
c13e562c44c05b09a7cce3049992eb27452d01dafa0b5c92ad3112445e25770c

SHA512
d5dec17c54f2243618661aa54edd93b0679b60dd690d7d06f8470dc1ac533855102b3d26420540b84e7baf9921056692caf6553a045a0d08a2cbd57d897cf7ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-95909.tmp\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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C:\Users\Admin\AppData\Local\Temp\is-JUK2S.tmp\is-5NJLK.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JUK2S.tmp\is-5NJLK.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\ps6tUh6mXMQNO.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\ps6tUh6mXMQNO.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/2200-156-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2200-138-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2200-132-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2796-134-0x0000000000000000-mapping.dmp

Download
memory/4684-153-0x0000000000000000-mapping.dmp

Download
memory/4748-145-0x0000000000000000-mapping.dmp

Download
memory/5024-154-0x0000000000000000-mapping.dmp

Download
memory/5040-142-0x0000000000400000-0x00000000013A3000-memory.dmp

Filesize
15.6MB

Download
memory/5040-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/5040-152-0x0000000000400000-0x00000000013A3000-memory.dmp

Filesize
15.6MB

Download
memory/5040-144-0x0000000000400000-0x00000000013A3000-memory.dmp

Filesize
15.6MB

Download
memory/5040-143-0x0000000000400000-0x00000000013A3000-memory.dmp

Filesize
15.6MB

Download
memory/5040-155-0x0000000000400000-0x00000000013A3000-memory.dmp

Filesize
15.6MB

Download
memory/5040-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads