nymaim | 559ea46fc2a352dd39b1f68fa52ab6e9215ebe62b2400c9f5169da5e2852a82a

General

Target

file.exe
Size

1.2MB
MD5

1504f56ca4e39342356a33fc4d1780fe
SHA1

1f4bf1832632603d766124ead462144218eb4b7e
SHA256

559ea46fc2a352dd39b1f68fa52ab6e9215ebe62b2400c9f5169da5e2852a82a
SHA512

ea7137597addac588777c66fd4874ca1d6371ad8cba5f3304468321288b5bf0b4d368525dbe093a4b65a9772ecdcdc2dd5405ff74ce18cb538e551650fb9397e
SSDEEP

24576:ZizsW7e21PqsKCqIHzEdxpHn6TSNhzKlTporlTuZRO+igZIY7eCLxYiA:Ss32BpKC9HzaxpaTChmslIRp1NeViA

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-QCDTD.tmpPrintFolders.exeFvvfIW.exe

pid process

3160 is-QCDTD.tmp
4776 PrintFolders.exe
2212 FvvfIW.exe
Loads dropped DLL 1 IoCs

Processes:

is-QCDTD.tmp

pid process

3160 is-QCDTD.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
3160	is-QCDTD.tmp
4776	PrintFolders.exe
2212	FvvfIW.exe

pid	process
3160	is-QCDTD.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-QCDTD.tmp

description	ioc	process
File created	C:\Program Files (x86)\PrintFolders\is-9D0F9.tmp	is-QCDTD.tmp
File created	C:\Program Files (x86)\PrintFolders\is-E05J3.tmp	is-QCDTD.tmp
File created	C:\Program Files (x86)\PrintFolders\is-NR89C.tmp	is-QCDTD.tmp
File created	C:\Program Files (x86)\PrintFolders\is-R13TN.tmp	is-QCDTD.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-QCDTD.tmp
File created	C:\Program Files (x86)\PrintFolders\is-7MB92.tmp	is-QCDTD.tmp
File created	C:\Program Files (x86)\PrintFolders\is-PODOQ.tmp	is-QCDTD.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-QCDTD.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-QCDTD.tmp

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

PrintFolders.exe

pid process

4776 PrintFolders.exe
4776 PrintFolders.exe
4776 PrintFolders.exe
4776 PrintFolders.exe
4776 PrintFolders.exe
4776 PrintFolders.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

PrintFolders.exe

pid process

4776 PrintFolders.exe

pid	process
4776	PrintFolders.exe
4776	PrintFolders.exe
4776	PrintFolders.exe
4776	PrintFolders.exe
4776	PrintFolders.exe
4776	PrintFolders.exe

pid	process
4776	PrintFolders.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

file.exeis-QCDTD.tmpPrintFolders.exe

description	pid	process	target process
PID 868 wrote to memory of 3160	868	file.exe	is-QCDTD.tmp
PID 868 wrote to memory of 3160	868	file.exe	is-QCDTD.tmp
PID 868 wrote to memory of 3160	868	file.exe	is-QCDTD.tmp
PID 3160 wrote to memory of 4776	3160	is-QCDTD.tmp	PrintFolders.exe
PID 3160 wrote to memory of 4776	3160	is-QCDTD.tmp	PrintFolders.exe
PID 3160 wrote to memory of 4776	3160	is-QCDTD.tmp	PrintFolders.exe
PID 4776 wrote to memory of 2212	4776	PrintFolders.exe	FvvfIW.exe
PID 4776 wrote to memory of 2212	4776	PrintFolders.exe	FvvfIW.exe
PID 4776 wrote to memory of 2212	4776	PrintFolders.exe	FvvfIW.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:868

C:\Users\Admin\AppData\Local\Temp\is-FVKAG.tmp\is-QCDTD.tmp
"C:\Users\Admin\AppData\Local\Temp\is-FVKAG.tmp\is-QCDTD.tmp" /SL4 $B0056 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1042298 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3160

C:\Program Files (x86)\PrintFolders\PrintFolders.exe
"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4776

C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\FvvfIW.exe
4⤵
- Executes dropped EXE
PID:2212

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
288821040a2e3c0225081df16f160251

SHA1
044908930edde68369564df7436f3800cb05edbd

SHA256
78cb9ba1d7fb71fa960c2bb5d1899ea3ecdefeec79bd5bd3b7b399b77f1077bd

SHA512
c3d09a8143940ea48776039527184ab10f100a5037e8dc9a1355b140450f85989e1d00fd0ccca930124437f4c7bc4d19a59cfebcd6deea0f0c23c542b6849f7a

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

Filesize
1.4MB

MD5
288821040a2e3c0225081df16f160251

SHA1
044908930edde68369564df7436f3800cb05edbd

SHA256
78cb9ba1d7fb71fa960c2bb5d1899ea3ecdefeec79bd5bd3b7b399b77f1077bd

SHA512
c3d09a8143940ea48776039527184ab10f100a5037e8dc9a1355b140450f85989e1d00fd0ccca930124437f4c7bc4d19a59cfebcd6deea0f0c23c542b6849f7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-DCNQ5.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-FVKAG.tmp\is-QCDTD.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-FVKAG.tmp\is-QCDTD.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\FvvfIW.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\FvvfIW.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/868-137-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/868-132-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2212-145-0x0000000000000000-mapping.dmp

Download
memory/3160-134-0x0000000000000000-mapping.dmp

Download
memory/4776-139-0x0000000000000000-mapping.dmp

Download
memory/4776-142-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/4776-143-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/4776-144-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/4776-148-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/4776-149-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download

Analysis

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