nymaim | 4d70ea906d44350cff33bf3968fb6350739353e3a5feff6cbb1fc8b92941d46b

General

Target

file.exe
Size

2.5MB
MD5

cbcf0460592b0b80e871a336b1a181f6
SHA1

06999e477676029d00f91f7742724cedf9aa8a85
SHA256

4d70ea906d44350cff33bf3968fb6350739353e3a5feff6cbb1fc8b92941d46b
SHA512

0797d2939f24f00d5cad6c015b6288913635c30b158ee81096e26067d61db9985f8201a0615f681e8c569c8062cbdbf2d9e80a07c6477e627c93f52b3c72ebb4
SSDEEP

49152:Z2fuSA1dWrwwzKih8a7m+GUOV5OMnYFFGLeMqA/8iim/pwlFMhAfA5hq:MfnUdlwzX8aycaYDweMqFG/pwm/Dq

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

pid	Process
2536	is-N2SPL.tmp
4036	ffsearcher64.exe
4892	3xQepa02NK.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	ffsearcher64.exe

Loads dropped DLL 1 IoCs

pid	Process
2536	is-N2SPL.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 12 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\ffSearcher\unins000.dat	is-N2SPL.tmp
File created	C:\Program Files (x86)\ffSearcher\unins000.dat	is-N2SPL.tmp
File created	C:\Program Files (x86)\ffSearcher\is-1QM6D.tmp	is-N2SPL.tmp
File created	C:\Program Files (x86)\ffSearcher\is-JSMMM.tmp	is-N2SPL.tmp
File created	C:\Program Files (x86)\ffSearcher\is-NETOB.tmp	is-N2SPL.tmp
File created	C:\Program Files (x86)\ffSearcher\is-TEM4R.tmp	is-N2SPL.tmp
File created	C:\Program Files (x86)\ffSearcher\is-3BS5V.tmp	is-N2SPL.tmp
File created	C:\Program Files (x86)\ffSearcher\is-I4JJ5.tmp	is-N2SPL.tmp
File created	C:\Program Files (x86)\ffSearcher\is-JE5VL.tmp	is-N2SPL.tmp
File created	C:\Program Files (x86)\ffSearcher\is-HOKHD.tmp	is-N2SPL.tmp
File created	C:\Program Files (x86)\ffSearcher\is-TH1OL.tmp	is-N2SPL.tmp
File opened for modification	C:\Program Files (x86)\ffSearcher\ffsearcher64.exe	is-N2SPL.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
4588	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4036	ffsearcher64.exe
4036	ffsearcher64.exe
4036	ffsearcher64.exe
4036	ffsearcher64.exe
4036	ffsearcher64.exe
4036	ffsearcher64.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4588	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 2536	1208	file.exe	77
PID 1208 wrote to memory of 2536	1208	file.exe	77
PID 1208 wrote to memory of 2536	1208	file.exe	77
PID 2536 wrote to memory of 4036	2536	is-N2SPL.tmp	80
PID 2536 wrote to memory of 4036	2536	is-N2SPL.tmp	80
PID 2536 wrote to memory of 4036	2536	is-N2SPL.tmp	80
PID 4036 wrote to memory of 4892	4036	ffsearcher64.exe	81
PID 4036 wrote to memory of 4892	4036	ffsearcher64.exe	81
PID 4036 wrote to memory of 4892	4036	ffsearcher64.exe	81
PID 4036 wrote to memory of 4848	4036	ffsearcher64.exe	91
PID 4036 wrote to memory of 4848	4036	ffsearcher64.exe	91
PID 4036 wrote to memory of 4848	4036	ffsearcher64.exe	91
PID 4848 wrote to memory of 4588	4848	cmd.exe	93
PID 4848 wrote to memory of 4588	4848	cmd.exe	93
PID 4848 wrote to memory of 4588	4848	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:1208
- C:\Users\Admin\AppData\Local\Temp\is-PHH03.tmp\is-N2SPL.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-PHH03.tmp\is-N2SPL.tmp" /SL4 $901DC "C:\Users\Admin\AppData\Local\Temp\file.exe" 2417878 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2536
- - C:\Program Files (x86)\ffSearcher\ffsearcher64.exe
    "C:\Program Files (x86)\ffSearcher\ffsearcher64.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4036
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\3xQepa02NK.exe
      4⤵
      Executes dropped EXE
      PID:4892
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "ffsearcher64.exe" /f & erase "C:\Program Files (x86)\ffSearcher\ffsearcher64.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4848
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "ffsearcher64.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4588

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\ffSearcher\ffsearcher64.exe

Filesize
3.8MB

MD5
f0052cb492833a8db1d3fe23dbca69da

SHA1
c205bd0f7d38a0e1ed4366317f4ddb730e8cb4cd

SHA256
5cb1c15a3bb80eceb8b0ac389b16c3fd18eabfbc357d1860209cada48d0e11da

SHA512
690e11efc27f5f96dfe86d3880fa3e843fe620ace6f9abc3282a9150b7679906879cbb117bc2f7c2e14ec3d3609195ba4abd7c3e9a9a41e7063d39e191f0d3af

Download Submit
C:\Program Files (x86)\ffSearcher\ffsearcher64.exe

Filesize
3.8MB

MD5
f0052cb492833a8db1d3fe23dbca69da

SHA1
c205bd0f7d38a0e1ed4366317f4ddb730e8cb4cd

SHA256
5cb1c15a3bb80eceb8b0ac389b16c3fd18eabfbc357d1860209cada48d0e11da

SHA512
690e11efc27f5f96dfe86d3880fa3e843fe620ace6f9abc3282a9150b7679906879cbb117bc2f7c2e14ec3d3609195ba4abd7c3e9a9a41e7063d39e191f0d3af

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-H7HM3.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PHH03.tmp\is-N2SPL.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PHH03.tmp\is-N2SPL.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\3xQepa02NK.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\3xQepa02NK.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1208-138-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1208-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1208-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4036-143-0x0000000000400000-0x00000000015C1000-memory.dmp

Filesize
17.8MB

Download
memory/4036-144-0x0000000000400000-0x00000000015C1000-memory.dmp

Filesize
17.8MB

Download
memory/4036-142-0x0000000000400000-0x00000000015C1000-memory.dmp

Filesize
17.8MB

Download
memory/4036-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4036-152-0x0000000000400000-0x00000000015C1000-memory.dmp

Filesize
17.8MB

Download
memory/4036-155-0x0000000000400000-0x00000000015C1000-memory.dmp

Filesize
17.8MB

Download

Analysis

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